Well, these three links that were on my + list still worked tonight.
Micro Base http://www.microbase.net/c_final.asp
Access Micro http://www.accessmicro.com
Some of the other ones I had links to either no longer exist or are now going to "strange" places (NECX Direct now goes to Gateway).
Another source that has worked for me in the past is the ratings from CNET http://computers.cnet.com
Part of the problem is the transitory nature of the net. A company that was good in the past may be gone, or gone bad since the last time I used them. So take this for what it's worth.