Backbone recommendations / Cleardata long-haul?

I'm in the process of dumping our secondary backbone provider, and I am
looking for recommendations on a new one. Does anyone work for, or use, a
backbone provider that they feel is top-notch? I've been repeatedly
disappointed in quality, service, and unmet promises from a variety of
providers over the past seven years.

Also, has anyone had experience with ClearData for long-haul point-to-point
service? I'm looking to replace our connection to PAIX. ClearData is
incredibly cheap, but they're also new and apt to make incredible
promises. Before I start wading through their lovely indemnity clauses on
their contract, I'd like to find out whether they're worth the trouble or

Thanks in advance.

If it's the same Clear Data I'm thinking of, they just filed for