I am a current customer with a reseller account and I am happy with their support and everything. The only thing that made me worry was that when I innitially bought an account with them they were using webhosting controller as the control panel and they gave me 10 domains and 10 subs. One year later they chaged the control panel which only allowed 10 accounts either domain or sub but as I said the staff is considering and freindly. They did help me out by setting up a few needed subs for my customers.
One more thing if it does not matter you then go for aspwebserver, that is, they dont have a mailing list option since the shift to the new control panel. I hope they will work on it though.