Guys whilst waiting for my F16 to be delivered (estimated end of last month but still not here [

] ) I ordered a Rafale from Troy Models and paid for it last week so hopefully won't be long. I need some advise from those of you who have flown one, I have the chance of getting a cheap Wren SS 17.5lb thrust. would this be ok or should I pay out more and get the 54.
regards
Paul