What engine did you not like in the Jammin X1 RTR? The reason why I am asking is that the Jammin X1 RTR originally came with the Force .26 (from what I have heard is crap). OFNA is now shipping the RTR with the Force .28 (which is what comes in the OFNA Ravager), even though the Jammin X1 RTR box still says .26. I just got the RTR for christmas from Tower and it had the .28. I haven't had a chance to really run it yet, but break in was fairly simple. I did, however, have a chance to see a Ravager run against a Mayhem RTR at my local track a few months ago and I can say that the .28 looked much stronger that the Mayhem .26.
Or
Get the Jammin X1 CR Pro Kit or Team Factory Kit (new hop-ups - check out
www.jamminproducts.com). Of course you will have to supply the engine, exhaust, and electronics.
Definitely get the Jammin. It is an awesome buggy.