Bandwidth Carriers Expensive And Cheap

A major part of web hosts are running linux these days, with congestion control mechanism 2.6 kernel and windows 2008 are now able to get full speed over higher latency even 200+, with the DSL an all major part of countries access to internet has been easy.

Now question is how exactly an expensive carrier such as MCI/ATT can make a difference for a website. expensive i mean by anything over $10 per mbit. Am sure for things like mission critical, financial institutions and for websites who need reach for every corner of 3rd world countries would need the best of the breed bandwidth. ok for the others who is always a regular guy or small business, is the expensive provider worth it? am trying to find out. please write your opinions on cheap/medium/expensive providers worthness of using such.

Internap is whole different as it will make a bandwidth mix superior which bgp can not do.