That's one reason I have a Storm 2M from SOBOX. I like to thermal but once in a while I get a bit crazy with speed. Quite a few (most?) thermal planes really don't like to be abused with aerobatics.

Planes like the Storm have a hollow molded wing and are built to take the rigures of aerobatics but will thermal nicely too. I'm running a F10LMR on 7 to 10 cells to get it up there quickly but you could go a less expensive route and still have fun.