I personally like ATX over XO. I'm a reseller for ATX and out of the 30 or T1's that I've sold for them I had zero installation problems. I think their reliability is awesome too...no system outages(well...no complaints that I've heard of) since I became a reseller.

I've been on a dozen or so XO cutovers & more than half were a disaster. Some, the T's were never even tested beforehand. Others were delayed days(1 account was delayed 2 weeks).
Not too mention about 2-3 months ago, my customers that use XO in the Philadelphia area were out without service for 24 hours.

As far as ATX & Verizon, I've had absolutley no problems with the cust. service between the two.

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