13" is the minimum. I have a 8" PVM for laughs and curiosity, can't play games on it and be comfortable.
These are the sort of monitors you want:
BVM-20F1E (top tier, too sharp/scanlines too thick for some)
http://www.ebay.co.uk/itm/SONY-BVM-...615276?hash=item4af696266c:g:vKYAAOSw9N1V1t~d
BVM-14H5E? (smaller version BVM, similar sharpness as above)
http://www.ebay.co.uk/itm/SONY-BVM-...223910?hash=item4af6ebbb26:g:P50AAOSwLN5Wj70U
PVM-20L2 (probably the best value for what you're getting and may have the best old-school image)
http://www.ebay.co.uk/itm/SONY-PVM-...627883?hash=item4d3e2d256b:g:hqwAAOSwLnlWmCsb
PVM-14L2 ("better" 14" BVM and bigger 20L2 above are same price, so this seems steep)
http://www.ebay.co.uk/itm/SONY-PVM-...160838?hash=item4af7929d86:g:ZaQAAOSwZG9WkTOz
I can't see shipping to see if it's outrageous, but the item prices here seem generally okay. Put in an offer for like two-thirds of asking price and see if seller bites.
Cheers for this Mega, it's really appreciated. I'm not actually too far from the PVM-20L2, so I might just give it ago. Would it be a two person job to carry this? I remember the old crts being pretty heavy...
I feel like this, along with vinyl, may just kill me financially.