the vorza is more durable, but the lx-1-E is a good car too.
just a side note...the lx-1-e can bend chassis' if you constantly land on the ass of it without a rear bumper. for me, i do alot of very heavy bashing and some pretty gnarly high jumping and every 1/8 buggy i own i run t-bone bumpers. (front and rear)
http://www.t-bone-racing.com/
imo, it's a must for the lx-1-e. if you're not an experienced jumper, make sure you know how to land or parts will become very expensive. it's not the most durable 1/8 buggy out there, but if you know how to jump you'll probably never have any issues.
there are some other hop ups some people do like the 8ight shocks, but if you're just bashing and not track racing it's not entirely necessary.
hope that helps