Question..... is it worth getting the Sprint HTC EVO?! Help appreciated, or stick w/ At&t & get the iphone?

So im really wanting a phone that has flash player? Does the evo or iphone? Im wanting a phone that say my kids can play on webkinz or other flash player needed sites while say in the car, or at the doctors? Also how is the camera on the evo or iphone? I heard evo has 8 mega pixel which would be nice. I LOVE taking pictures yet HATE lugging around my camera everywhere (but i always have my phone). Does the camera have any type of zoom or does it have a flash? Also, how is the INTERNET on it? Ive never really had a phone with the internet on it and dont get how it works really. I had a blackberry pearl (got it for free).. well i HATED IT.. using the internet was like a tiny screen with little words, wouldn't even load pictures right and it reminded me of how the internet use to be 15 years ago. Can you look at sites like YOU TUBE and stuff on the evo or iphone? Does it somewhat remind you of an actual computer versus just a screen with black words that you have to try and figure out how to even click on a link? Just any opinions would be HIGHLY appreciated. I tried looking on the website but they are never that detailed... and i would go look at one in a store if they were open. I currently have at&t but am thinking about switching to sprint..