Colo on the West Coast

Hi, I'm looking for a colo provider somewhere on the west coast, preferably somewhere close to one of the peering exchanges. A virtual machine will do. I want to use it to run a small performance monitoring box (traceroutes, pings, etc). I also would like to get a full bgp feed into it so I can monitor bgp as well. Who do you think would be the best one to do it with? (answers can be off-list) kind regards Pshem