RE: Getting into DF
Finish the Enforcer, it's a blast to fly. I've got about 120 flights on my DF Enforcer. I don't fly it much any more. I'm up to about 150 flights on my Turbine Enforcer so far.
I can understand your desire for something more scale like. Do a search in the jets forum and you'll find a number of threads for first jet or newbie recommendations. In addition to the ones mentioned a Byron Mig 15, Yellow F-16, or BVM Maverick would also be good. I'm not a fan of the 46 sized jets. They are not much cheaper than a 91 and your options are very limited if you want to transfer the engine/fan/pipe to another plane.
Check out the Jets Classified section to see if you can find a deal on a good used one.
Joe