I didn't say that BVM wasn't a good monitor, if you'd actually read my post. Just that multisync, high res (eg, HRTrinitron) or large size (20", 24" or 32") are the best CRT BVMs. But which of those factors is most important to you, or how much you are willing to pay, is another question. 20" monitors are usually cheaper than 32", but they are often not multisync. You could always get another multisync (Multiformat) monitor later on, in any case.
A lot of the Multiformat monitors have a 16:9 aspect ratio which doesn't make them a good choice for classic SD games consoles. As for bigger screen sizes sharpness and clarity noticeably drop off on the larger displays as compared to say a 800 lines 14" HR.