If you don't plan on seriously racing, then the Ultra LX is fine. I personally don't like it because it's a bit heavier compared to other 1/8th scales. The Force .26 that comes with it gives the buggy a good straight-line acceleration, but the overall handling leaves much to be desired. I've driven my friend's Ultra LX and I noticed it has a lot of body roll and poor stability in the corners.
HPI Savage Flux HP | Tamiya TB-03