I say go up to .40,, after that is big planes..technically we (being 1/2a) would have to stop allowing posts after .074 right? and a forum from .074 to .10, then .15 to .25 or .32 would be redundant, so from .010 to .40 should handle it well,, also a lot of .40 talk is trainer stuff anyway....oh and William.. there are lots of posts where you (anyone) asks a simple question and 50 people look at it but no one answers it... its the nature of the beast so to speak...Rog