I've been putting together(slowly) all the stuff I'm going to need to fully convert to a 2 screen Carputer in the Z.

so far, I've only covered some of the sound...

1x JL 500/1 for subs
1x JL 300/4 for 4x components
2x JL 8w7's


I plan on running 2 screens so that I can have a dedicated Nav/GPS screen up top, and then my mp3/dvd/whatever on the bottom.

Today, I'm looking to buy the screens. The popular choice seems to be the Lilliput 7" touchscreen. So I'm thinking of getting two of those. As I'm looking on ebay, though, there are two versions. One with the buttons on the outside, and one with the buttons on the bottom.

What is the difference? Which should I get?

Bottom Buttons:
http://cgi.ebay.com/Lilliput-7-Touch...QQcmdZViewItem

Side Buttons:
http://cgi.ebay.com/Lilliput-EBY701-...QQcmdZViewItem

Thanks for your help!!!

Austin