AT&T Tilt vs Samsung BlackJack 2 vs Pantech Duo?

i own the Samsung Blackjack 2 and a similar model of the AT&T tilt which is the HTC 8125. If you like going on the internet then I would get the AT&T Tilt if it has Wi Fi because that means you don't have to go through your service and have to pay fee(you can go through a modem or wifi spot if one is available). I like the Blackjack 2 because it is and all over good phone with very few drawbacks or weak spots.