RE: Help me pick out my second between these two
As long as we're confusing the guy with more planes, here's another suggestion: World Models Super Sports 40. About as fast as an Avistar, just as easy to fly and very easy to assemble. Plus WM has all the replacement parts available, should you break something past repairing. And at $99, won't break the bank. I'm flying mine with a ST .40, but have seen lots of them with .46 AX or FX, and that makes it a real rocket.
But the Skyraider Mach II is a great other choice, and you might as well make your second plane a taildragger..... gotta learn sooner or later!
Andy