Some of the vendors that I have used and been happy with (many of which you already have listed):
The Laser's Edge:
Ken is probably the premier online vendor for prog and progmetal. Good prices, great selection, and quick shipping.
The End:
Prices include shipping, so they are often the lowest prices on the net. They specialize in black/death but generally have a good selection of progmetal and traditional stuff. Great vendor.
CDUniverse:
I've been using these guys a lot lately - they seem to have a lot of good sales prices and their selection is among the best of the big vendors. They take Paypal, which is nice.
CDConnection:
Nothing special, but occasionally they have the best prices on mainstream stuff, and the service and shipping times are first-rate.
Sentinel Steel:
Denis is a good vendor - has a good selection of power metal and gets some good used inventory. Site updates are a bit spotty.
Big Badd Wolf (
www.bigbaddwolf.com):
A really great, underrated vendor with a nice selection of Japanese and Euro imports at good prices. I've found stuff here that I can't find anywhere else, and the service and shipping are solid. Good place to find classic '80s stuff.
Cheap CDs (
www.cheap-cds.com):
A good source for mainstream stuff. Prices are exceptional, although they add on extra "handling" fees...but they can still sometimes beat anybody else's prices. And they are quick and reliable.
Hard & Heavy (
www.hardnheavy.com):
Top-notch vendor for progmetal and power metal. Prices aren't great, but the tradeoff is that you get great, personal service.
That's what I can think of off the top of my head....
-MG
