Its just depends on what you want to fly. I fyou want to get into "Real jets" such as a nice sport jet or a scale jet, I would fly the crap out of heavy EDF first.
I think that is better than a trainer turbine jet. Those dont really fly like jets and wont teach you "much" in terms of flying. Too many people buy trainer turbines and never move off of them. Most I see flying cool jets were flying cool stuff as EDF or heavy warbirds.
A habu 32 is a good start, it has retracts, flaps, and it does actually snap or stall. Try to get a heavy 5000 Mah 40C lipo in there.
Other good ones are the hobbyking fiberglass stuff or the HET stuff. While not great quality, they are heavy and once powered fly very similar to a turbine jet.
I have a small HET jet and it is harder to fly and land than any turbine jet I have owned.
Dont laugh, BUT, I have a small foamie cessna from flyzone hobby. The original red one, not the new "select" one. I still have it today and have yet to land it more than a handful of times without breaking it. So heavy, square foot of wing area, brushed motor. PERFECT for learning energy managment. It snaps hard and requires every manuever to be carefully planned. Stall out and you need alteast 100 feet to recover, like a turbine jet!
http://allaboutfunhobbies.com/store/...oducts_id/3794
Energy management is not the only thing to learn, but IMO the hardest as it affects both flying, stalling, and landing. Land them too fast, they break. Land too slow they stall.