Flux HP or 2350?

I'm fairly sure they are the same truck minus electronics, although I haven't seen a 2350 in person. Honestly, I'd say that if you are looking to keep the truck stock and not extend it to XL length, the 2350 on 4s will probably be enough, but if you are looking to beef it up and extend it or run bigger tires/wheels I'd say go with the normal Flux on 5 or 6s. 6s on the stock Flux wheelbase is just a little too much power IMO, not very controllable. So it really depends on what you want for your truck, you'll probably break less parts on the 2350, but standing back flips on 6s is pretty fun too.