I've been using Samsung Galaxy S for more than half a month now.
Pluses:
1. Bigger screen and good resolution. Although not as as sharp as iPhone4, it's still extremely extremely good.
2. Under bright light, the camera and video camera are fantastic. Love the pictures taken with it. Don't know how that compares to iPhone 4's but it is way way above my expectation already.
3. Form factor is very nice. Light and slim. No excessive bezel.
4. Web browsing is faster and more pleasant. I'm comparing with my iPhone 3GS when making this statement, not to iPhone 4.
5. One thing nice about Android as compared to iOS is that for music lovers who don't think it's wrong to steal music, there are heaps of music download applications in the market place. Music downloaded appear in the native music player. Unlike in iPhone, where although you can download music, the music must be played with a third party player and not iPod (of course, unless you copy the music to the PC, load into iTune on the PC, and sync back to iPhone again).
6. The Swype keyboard is the best keyboard I've used. I thought that it's difficult to beat the one from iPhone, but I'm wrong. Swype is fantastic.
7. I like the notification bar in Android.
Negatives:
1. Not running Froyo 2.2 yet.
2. GPS is non-functional. Unable to hold on to locked position. Jumps all over, causing constant and erroneous route recalculation if you use it for travelling
3. Very very limited choice in application. Only Copilot is available for Australia. No TomTom, Navigon, Sygic, iGO, Ndrive. The free navigation software from Google does not support Australia at all.
4. Very very slow mail, both stock and every mail I tried in the market place crawls. Stock mail is extremely limited in functions and features. Mail does not suppot HTML.
5. Applications by the same developer seems to be inferior on Android as compared to on iPhone. GolfCard Pro from Senygma is an example. The Android version is slower, more buggy, and with less functions and features.
6. For non-programmer, and non-hacker at least, a jailbroken iphone is far far more customizable and has more functionality than a rooted Android phone. Example, it's not possible to have the VolumeButtonExtender or Activator type of customization on Android.
7. Other than web brower, I find everything to be slower on SGS than even iPhone 3GS. In some places, slower than 3G.
8. Another high usage area in my case is RSS feed. I use RSS g Flash on iPhone, but simply can't find anything remotely close on Android. If you're a Google Reader account holder, you may find it a challenge to get a RSS reader that has even remotely acceptable speed. However, if your interest is just to read news by newsfeed source (e.g., CNN, BBC) instead of google folder, then there are very excellent and fast application available.
9.Privacy issue and no reliable and workable way to sync to outlook. The Kies software provided by Samsung is crap. It's unable to properly and accurately sync contact on 32 bit PC. Calendar syncing is completely not working on any platform. On Mac and 64 bit PC, even half bake solution is not available. You're FORCED to surrender your contact and calendar details to the cloud, something I'm extremely uncomfortable with. When I used a product called MyBackup to back up the application and data on the SD card just before I flashed the firmware, I chosed to back up to the phone and not to the cloud. However, when I restored, it simply restored everything from the SD card to the cloud and not to the phone!!!! I was absolutely pissed off by that.
10. The whole syncing logic is strange and flawed even if one has no privacy concern. When you sync to the cloud, calendar as well as contact info appear many times. It's mysterious and hard to remove.
11. Boot up is a pain if you have lots of music. There is a long process of scanning for media each time I do a soft reset.
12. Samsung's somehow has designed the phone placing components of the system which should have been on NAND memory on the internal SD storage, which is very slow. This is why the device has very serious lag problem. There are people who perform very complicated fix to change this set up but the procedure is not for the faint hearted.
13. The stock mail does not take Yahoo mail account. I don't like using multiple applications for mails (I have about 6 mail accounts). Stock mail individual account can be refreshed only after you get into the account. So, if you have 6 accounts, you can't press one button to refresh all. To do that you have to use third party mail, such as the K-9 mail.
14. Copy and paste is still missing in many part of the system.
15. Because SGS does not have a trackball, it is difficult to position the cursor when tryinng to select text.
16. Many things that we take for granted on iPhone simply can't be done on Android. I can't even set up on calendar events that happens on alternate week for example. The functions are features are too basic, contrary to the hypes which wants you to believe that Android has more power, flexibility and functionality.
17. One of the reasons I bought it was to play flash videos. Unfortunately it doesn't. On
www.youku.com, for example, using skyfire beta, most videos don't play. However, the advertisements do play.
On the issue of reception. Yes, I can make it drop signal from -81dBm to -111dBm by merely resting the device on my hand without gripping it. Yes, I can make it completely drop a call in poor coverage area when griping it. Shown it to a few friends of mine already.
So, yes, I went for it, but now I'm back to iPhone 4.