The thing is that I'm planning two matching cabs (horizontal and vertical), and I've been planning them for so long that when they're done, they literally need to last a lifetime. This means having several spare monitors to replace with as they die. If I plan on a normal service life of 20 years per tube, I should really have at least 6 monitors to last two cabs for another sixty years. Yes, I am really this insane.
Getting one studio/professional monitor or arcade monitor is doable, but it wouldn't be as feasible to get 6 matching ones (or at least two) due to cost and rarity.
I love my current TV's (KV-27FS120), and I already have four of them. I prefer them not only for the picture quality, but also the powerful adjustment available in the service quality. Also, I already have four of them, and more are readily available dirt cheap. However, the one thing I can't fix in the service menu is some slight horizontal bowing in the mid-to-bottom center of the screen.

It's an effect of the electron gun trying to scan onto a flat-face tube. Not all the points on the tube are equidistant from the electron gun in the back as they were with a traditional round tube, so it's much harder to draw a perfectly straight line. It's not noticeable in gameplay unless you look for it, but I'm hoping there's something I can do at the neck, or somewhere inside, to fix it. If I can't, I might consider switching to a curved tube.
Can you get into the service menu on your Toshiba?