GoDaddy had a very clean and fair approach. No multiple preregs, no auctions afterwards, flat $60 rates. Once you were in the line no one else could get the name with them. GoDaddy spread out reservations between many clones (GoItaly, GoFrance, GoAustralia, ...) so success rate was high too. They learned from bad .eu experience.
The only bad thing was they were freezing the money while i.e. DomainPeople (Hostway) were only charging successful regs after the fact.
GoDaddy - best experience
(after eu landrush Parsons said they lost lots of money, I knew with his aggressive approach he will do everything to succeed in mobi case)