I can tell about Tulip sistems. Likely you ask why ?????
"Tulip Systems, Inc. is a fast-paced, highly creative and collaborative environment. Our management team is comprised of seasoned professionals possessing a broad range of technology expertise and cooperate management experience.
We provide custom collocation hosting services that include a secure and redundant high-speed connection with 99.9% uptime guarantee, Mbps or gigabyte bandwidth metering, and friendly, helpful staff who get the job done for you."
I advise you look :
http://www.ts-host.com