I have two ideas on this subject, I think its down to your confidence in your ability aswell as Flying Site Location/Size/Tarmac or Grass and Surroundings. If you feel you'd be comfortable in flying and landing a model with a slightly higher Top Speed/Landing Approach Speed or Stall Speed then I would by all means buy a jet that you think will suite you most after perhaps asking around at any local Jet Meetings. I started with a Jet Legend Hawk with a Wren SuperSport (not an ideal training model), and there was alot of people who reccomended I fitted my turbine into a Boomerang Jet before flying the Hawk, but without wanting to sound big headed in anyway, Id put quite alot of Stick Time in on Sport / F3A models and felt I was ready to deal with any of the stereotypical flying / landing characteristics of the Hawk.

On the other hand, we also fly a Boomerang Elan with a Wren SuperSport and found it be well capable of 190mph and with a small amount of tweaking it would perform any stunt asked of it aswell as landing at walking pace, I know that this may not be what your looking, even we admit, it has a look only its mother could love but a very good introduction to Jets.

Hope this helps.

Regards Jame