Well that was stupid of you for letting yourself get screwed over. I would so jump on the iphone if their plans didnt suck. Hell you can get unlimited everything from sprint(except tethering, which you can still do if you dont go crazy on it) for 99.99. And you cant compare an A900 to a iphone, they arent even in the same league. At least compare the iphone to the HTC Diamond or HTC Touch pro.
Well to be honest, I had been dealing with Sprint for a while. They originally charged me $483 for the first month because when I added tethering to my A900 they actually removed my voice plan and charged me for every minute I spoke on the phone. It was insane. They said they credited me, but I don't think I really ever got it back.
I don't want to get into a pissing match about which company is full of the biggest liars or cheaters, especially since I think they are all crooks and full of crap (especially the operators), but I will say I am much happier with my AT&T service.
As for the phone comparison, my point was, they charged me for FULL internet service on an A900 when it clearly isn't a device with "FULL" internet capability, and as you know, sprint charges extra for the tethering feature, nearly the price of comcast cable broadband. There were no reasonable prices on most of the services Sprint offered.
As for my iPhone cost comparison, after my $100 credit from Apple for buying early, the price wasn't much different than what I paid for my A900 when it first came out, maybe $100 difference. After all the extra taxes and fees, I pay under $100 a month for my iPhone. 200 texts, which I rarely go over except when I'm at a conference or away from home plus however many minutes they give you. Sorry, I can't compare it to the phones you mentioned, the HTC Diamond and HTC Touch weren't around when the iPhone came out, those companies were just warming up the xerox machines at that point.
If you don't like the iPhone 3G plans, which I agree are a little high, I would recommend buying a used or refurbished iPhone 1st Gen. Edge network isn't as bad as everybody says, and you find wifi nearly everywhere you. The app store cannot be compared to any other feature on any other phone. It is worth the price of admission right there.