It butchered my palettes from the DOS ones, so I refuse to use it ever again. The Win32 one, AFAIK is some after-the-fact port taken on by someone after the original team stopped.
But, that was over 3 years ago dude. Give it a shot lol. They may have bettered it up by now.
Grafx2, when I used to use it, was a great paint program for me only because I f*cking suck at painting, and the interface is simple. WYSIWYG. Photoshops got too many goddamn buttons and menus and doodads.
NeoPaint is a pretty solid program too. I suggest people check it out when they can. It's worth getting, IMO. Supports 16 color PCX properly.