Go hostgator. I love em. PM me if you want to use my Ref link =) I'll pay you half the referral commission if you do. Hostgator is the best. They have a Phone #, and the best support ever.
I have hosted several sites for the past years with Host4Proft. You can earn $10 a month per domain as an affiliate, the first domain is $24.95 a month and then each additional one is $5 per month. Sub domains are free, they have excellent back end support, site statisitics, and an almost 100% up time. You also get access to the Warrior Forum.
believe me or not but knowhost is better than a lot. They bent over backwards to show me the difference between Plesk and cPanel as I have only used Ensim as an administrator. I felt like someone that knew their way around a server to a complete neophyte... they walked me through everything and explained it all without talking down to me."
Im down to two. Go Daddy.com or BlueHost.com. I never mentioned godaddy before because I have seen some complaints on godaddy. Now I just have to compare them.
I second Hostgator You can have multiple domains hosted with them on one account and the support is excellent. I have been using them for over a year and have never had server problems with them yet.