I like frozen, too. As
@alsant said, just about any pizza is ok with me with some being better than others. Lozza Mozza are good and I like Jack's, too. Not terribly picky. I agree with
@eric383 that Tombstone isn't as good as it was years back.
Around here, one debate is should pizza be cut in triangle slices or squares. A lot of Wisconsin places - especially bars - cut it in squares. I prefer triangles, myself. Are squares being done in many other states? I don't think the east coast does that at all.
We've had Giordano's in Chicago a few times. I'm not partial to deep dish - I prefer thin, but I still enjoy it from time to time. Giordano's makes a good thin crust, too.
There’s an unwritten rule - that someone should write down - you haven’t yet become a Man Until you’ve eaten and enjoyed cold, left over pizza. It’s simply a right of passage.
Who eats leftover pizza cold? I do - love it that way. The women at work think I'm nuts, but that's not the only reason.