I've never looked back.
The only tips that I can give you are:
Check to make sure that it's not too small top to bottom. I ended up with one that seems to be for frozen pizzas and cookies. I can't put a whole chicken in it. I didn't know that they made low ones. My previous one would make a rotisserie chicken in it.
And, find the largest pan that you want to use, and measure it, then look at the internal size of the ovens that you are considering.
I couldn't get larger than a 7x11" pan in one of mine, because even though it would cook a 12" pizza, it said, my pan that would have fit had handles on each side, which didn't allow it in.
Good luck! :-)