Which characters better for a game?

[tri-circle]

I'm making a platformer game called TEN where you have ten lives, ten seconds and ten moves to complete each level. Heres an outdated beta version i made for testers quite a while ago:
http://www.newgrounds.com/dump/item/f670 49b1bcd24e190c03f5f72f470a51
Most features dont work in that (including most of the menu buttons and stuff), use the arrow keys to move and jump and space to kill yourself when you have to moves left.

The game has changed a lot and i realized the character was pretty suckish so i decided to make a new one, but i cant decide which one to use or even weather i should just design another one. What do you think, opinions? Ideas? Suggestions?

Character Left = new one and character right = old one

[Sam]

If the one on the left were lineless it would look nicer in the game, however, being quite generic levels the old character seems like the better choice.

[Jimp]

ye i prefer the little yellow guy