I have a blue sig Senior and love it.......It is not a bird that likes wind but anything less than 10 mph and not gusty is just fine.
I have an OS 46 on mine and that seems to be a good combination........This is considered a giant by AMA and is legal in those catagories.....The ARF is easy to put together with no known major problems although most people that i know had to put approx 16 ozs. of weight in the nose to get it to balance correctly.
Last but not least if you have a wing that is slightly twisted and lots of wrinkles, a heat iron will take care of that but care must be taken not to over do it.
Varmit