I use Melbourne IT (Yahoo's business partner) but I am not satisfied. For example, I used Godaddy for hosting my domains, but a poblem occured with DNS name server. I need an offer immediately.

Godaddy seems to be pretty good, and has a sister company called BlueRazor for those who manage multiple domains.

I also use APlus.net, but they're not as good -- the price is reasonable but everything they do is much slower, and they're not as organized as Godaddy.