www.fixedorbit.com - Just place your hosts name into there and you can see their upstream bandwidth providers, their ASN and how many peers their upstreams really have.
Personally, I prefer having my gear in a carrier neutral facility so I can get whatever upstreams I want.
For instance, I have 2 racks at 1 wilshire in the Meet me room in LA. All connecting into Tier1 ISP's that are out there ... something on the order of 10connections currently..... No I am not a host, just a guy that has mission critical apps that my customers use 24-7................
As far as hosting - To me it comes down to support since you are depending on the host for your connection as a middleman to the net.
Get your own racks, power and IP's. The IPs are free mostly and support your own boxes if you want to truly ball.
