My second and third planes were Hobby-Lobby's Mini-Piper and Rare Bear slowflyer.

I like the Mini-Piper for it's landing gear. I added a tailwheel and can rise off pavement and land. It will loop and stall-turn. It can even roll (good for a rudder-only plane) but you'll crash a LOT trying to get that right. And it flies a pretty long time. It was a good challenge right after the Firebird, and I still like to fly it.

It will fly inverted, though it slips off the altitude pretty quicky. It will NOT outside loop, no matter how hard you try.

The Rare Bear is a fun, precision flying plane. It uses aileron to turn instead of rudder. so it rolls much easier, and the turns are a lot more responsive too. It rolls, loops, and flies inverted (better than the Piper). No landing gear, though, so it's relegated to hand launches and grass landings. I put Li-Polymers in it and I cannot fly long enough to empty the batteries.

It's a low-wing plane, and quite responsive, so you may consider the Piper first.