Droid X ex-user
I bought the Droid X last year, 3 months before they announced the Verizon iPhone. Boy was I mad!

So I have sucked up using the X for the last year. The constant locking up and restarting was a feature that was included on the X not just the HTC phones. The constant lag really sucked too.
With Verizon I would have had to pay full price for the privilege to get an iPhone 4. So I waited until the latest iPhone came out and went on Craigslist to look for an Apple junkie who was going to get the new 4s. Found one, bought an iPhone4 and for the last 10 days I have been trying to learn a new system, although everything else in my house is Apple.
I DO NOT miss that crappy X.
However I do miss the following:
I work at night and sleep during the day. The Android market had an app call VIP Alert. After silencing the phone it would allow only selected phone numbers through to ring. Great incase of an emergency or a kid that is sick at school.
I really miss that one, cause we have no home phone.
Also the Android market had two tethering apps that worked decently at no charge:
Easy tether and PDA.net
Miss those.
I too miss the Weather widgets on the home screen.
Also miss the navigator, not perfect but better than what I have found so far on the iPhone.
Also miss being able to toggle bluetooth, wifi, airplane mode and GPS, on and off from the home page.
Ringtones were abundant in the Android market.
Missing the Zedge.
I also miss that many apps were free with the Android market.
What I don't miss is the fact that the battery did not last more than 12 hours, just had my iPhone on and unplugged for almost 48 hours, love it.
Love the seamless integration between my Mac and my phone.
I also love how polished the whole iOS is.
Overall as my friends and I have said before we love Apple because it just works. Insert any product here.
Although after reading through my list one may ask why I switched.
I am kind of wondering that now too. I guess I just had to have an iPhone.
It has only been 10 days though. I will report back when it has been 10 weeks.