Mark,

I agree with Cabane - the Hype is a stunning model. Build quality is very good, amongst the best ARTFs I've seen, and as for the flying! Well its supurb. Get the CG nicely far back, max the rates and its just so much fun.

I was under the impression the OS70 was a heavy engine. If so you could use it in the Hype but you will have difficulty keeping it light and getiing the CG correct.

Either the Hype or UCD will be good, not seen the YT stuff so I can't comment

Andy