G3 had just as many unhappy customers when it first came out. After many patches it turned into a good sim and sales took off. FSOne has some issues regarding physics but both companies listen to the customers and improve. This just seems to be the norm for RC sims. I went back to G3 myself but once I hear they fix 3.5 physics, I'll try it again. I'd say if you don't like G3.5, just go back and reload G3 (kind of a pain with all the add-ons I know) and wait until they fix up 3.5.