Minis and manufacturers

It's me again, guys...

Well, a much less whiny message this time - Is there a concise
listing of modern and sci-fi miniatures manufacturers out there?  As
of right now, these are the ones I know of:

Geo-Hex (of course!)
Ral Partha's Battletech figures (tho' I guess it is mostly mech's, since the
vehicles seem to me to big for the DS II scale... Stone Mountain Miniatures
(6mm and 25mm (they seem to specialize in historical models, tho'...) Stan
Johansen (Modern at 20mm,
Sci-Fi at
1/300th and 25mm) Reviresco (25mm, with aliens and robots - the
drawings weren't very promising, tho') And perhaps Lance and Laser, but it
seems they discontinued their Star Corps series (25mm)

Any others?  Anyone with experience with this models/manufacturers?
BTW, 1/300th is the same as 6mm, right?

Also, where do you guys buy your mini's? It's very hard for me to get GZG
stuff here in Minneapolis, and it is also very exxxpensive (even if it is
priced competitively, it is still $12.00 per 6 man squad...). I've seen the
one.sig in the list, but are there any other discount shops like that on the
internet?

Thank you guys!!!