fuels are sick. The tough part is, is that you can do everything and more with RPMs vs fuels. The marginal benefit you gain in unhooked flying characteristics is at a huge compromise for range. I used to exclusively ride fuels, but my kite life is so much simpler with RPMs. The conditions where I ride vary drastically so it just makes more sense.
My unsolicited advice is to make the switch to fuels if you are excited about riding a different style kite.
The above is excellent advice. The RPM has more range and is more versatile. Perhaps getting a Fuel in the size you would kite with at your local spot on an average day. This would give you a good idea if that is the kite for you. One thing for sure, the Fuel gives you super power in the turns and that ripped off the water feel when boosting that no bridled kite I've tried matches. Good luck!