Thinking about these two

http://www.crutchfield.com/p_158N500...X-N5000BT.html

http://www.crutchfield.com/p_105KDAH...-KD-AHD57.html


Both are steering wheel control compatible. Any opinions on which one? Also when i go to buy it, it says i have to pick between 4 or 8 speakers with or without Onstar. I have a 97 coupe but im not sure if i have 4 or 8 speakers.. Im guessing 4?