Which phone should I choose?

I have to choose between the Samsung Impression and the Blackjack 2. Which is a better phone? I know that the Samsung Blackjack 2 is a smart phone, while the Samsung Impression is not, but the Impression has a AMOLED screen, so its brighter and has more vivid colors, also it has a touch screen and I bigger spacier keyboard. But I really like the threaded texting, which the Impression doesnt have, but the Blackjack does. What should I do? Maybe people who have had both phones, which one is better?