Things were a lot easier with a regular cabinet and a 25" Sony TV

I am thinking of purchasing a showcase cab from mameroom, I have always wanted one, but I am concerned about video.
Seems like a lot of what I am reading while searching here is that 33" Arcade Monitors are hard to come by and aren't the best value anymore. What do you guys suggest for a showcase cabinet? Can a 33ish" TV be used in a showcase cab? I don't want to de-case a TV, too dangerous, I am not experienced enough for it. My machine will be used for Mame, Daphne, etc... not too sure about consoles yet, strictly PC stuff at this point.
What are my options?