So, let me give my $0.02 on this, as I'd started flying quads and went to fixed wings:
1) Giving it throttle does not necessarily equate to lift.
2) 3 channel planes (i.e., those without rudders), do not "pivot" around a yaw angle. It's all about roll and an angled turn. If you go 4 channel (one with a rudder) you can get the plane to turn faster, but I've yet to get one to turn on a dime like I can with a quad...
3) Bigger wingspan = more stable flight and less susceptible to wind, for the most part. I went through training at my field with an Apprentice S15, which is a GREAT trainer plane - very stable, great glide path, VERY easy to fly, and it'll do aerobatics when you want to move up. That was my father's plane, which I used to get qualified and get my club's "pilot license" to fly solo at the field. My own personal first plane was the FT Sea Duck, which flies WONDERFULLY. It's got a great glide path as well, and I can get it to do some decent aerobatics, albeit not as nicely as the 3D pilots at my field.
It's just a great, fun plane that the people at my club LOVE seeing, because they're so amazed that something that big can do some of the stuff I do with it (I don't know how to describe it, but I've got a bit where I kind of do a twisting loop, where I start it up into a climb, roll it to the right or left right as it's hitting the top of the loop, and it just kinda gently rolls over and comes back down).
I'd highly recommend the Apprentice for a starter plane and as something to grow into; you can still get yourself into trouble with it and kill it, but it's a plane that's relatively forgiving at lower rates, will still give you the rudder feel that you're used to from quads, and will still give you smiles when you just want to put something reliable in the air.