Andrew, from personal experience I would recommend the Reaction 54. I just finished mine this spring and soloed with it this past weekend. My first jet and it handles like a dream. It's available as an ARF from PST or in kit form from Bruce Tharpe at
www.btemodels.com/r54.html. If you're a builder, the kit is beautiful. Goes together very easily with all parts fitting perfectly. Unfortunately the kit is currently out of stock but Bruce promises more this summer. Worth waiting for. In the mean time review the R-54 thread in this forum. You can find it easily by searching on my name or Bruce Tharpe's name.