what do others have at the local club? Thats a good starting point for setup tips and parts if you break at the track.
I have had a madrat which I sold when I got a Xpro.. upgraded madrat and i really like it.
I also have a losi xxxcr with not a lot of running so can't tell you the difference.
Depends also on what the used B4 goes for. RTR or kit etc
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