Spy, people seem to like both, but for different reasons. If you are looking for a ded. server for personal reasons, and know how to admin. one, then dialtoneinternet might be the better choice.
If you are looking to host clients (start up some form of web hosting company), then Alabanza's managed, somewhat host-in-a-box setup might be easier for you. It does come at a higher price though.
People seem to forget to post WHY they want this or that, which makes recommending anything a difficult task.
"I need a lease dedicated server to host web hosting clients with these specifications (blah blah), can you suggest a company?"
I would suggest starting a new topic like "Alabanza ro Dialtoninternet?" and asking for replies on both, from USERS if you want general comments about service.