So I've finally dug my old CRT back out from storage. It's a Samsung TXR-2035 from around 2003, which I bought new back then. Flat screen, component and S-video inputs. Its life was mostly lived out through component 480i Gamecube & PS2 at that time. After falling through the rabbit hole of RGB, framemeisters, and exceptional image quality, I started wanting to find out if this CRT could deliver a great 240p experience.
The best way to test this was via PS2 component playing a PS1 game, which does output 240p. And it did, and my eyes were opened.
I recently grabbed an RGB -> component box from eBay (the seller has them here, too) and it's worked beautifully with everything I've thrown at it. The images can't really do it justice (pardon the phone pics), but this setup + a trip to the service menu have really done wonders:
I can't recommend this approach enough for anyone who's got a CRT laying dormant somewhere or can grab a great one for essentially free. Less involved than trying to source a PVM, and still well worth doing.