Hi, Hope you get this.
I have been doing a lot of research and came across CertifiedHosting.com
There are a lot of great hosting companies out there, no doubt, but what got me was Certified's customer service. First, you call and someone answers. Of course its first level but you get someone right away. Next, Their reseller account was an easy set up, and they have been great all the way.
Here is the other thing, You are wanting to resell.. it's a good start when you have a company that really goes out of there way to make your life smooth! Certified Hosting does that. Great Web Hosting, Great customer support.
I really recommend them and I have transferred my accounts to them, because of their terrific support.. That's it.