Samsung Highlight vs Impression

Which is the newer phone? and do they both have the same features? Which is better?

From all I could find on Samsung the highlight seems better but pictures of it make it look lower budget. Confused.

And that is about all I know. 

Samsung has launched a new mobile in the U.S. market, we are talking about Samsung Impression, An attractive cell phone that has a huge touchscreen AMOLED of 3.2 pixels, with a resolution of 400 x 240 pixels. It also has a 3 megapixel camera, keyboard slider QWERTY, slot microSD, 3G ( HSDPA ), GPS, Bluetooth A2DP, etc. The U.S. operator AT & T offer this phone at $ 200 a term contract of two years, not bad if you consider all your specifications.