WHMCS looks far more professional. I'm still working on customizing ours to give it an even more unique look. Plus at $18/m doesn't hurt to give it a try if you don't like it no big lose.
Did you make your deposit into your enom account? I am going to digress from this topic for a second and recommend netearthone.com for your domain reseller as it is cheaper. </offtopic> Now, I prefer WHMCS, it has a great forum that people have created some customizations (such as not allowing clients to change name and business name) as well as VERY EASY integration if you want. It also looks much cleaner, and the interface from both admin and client side of the house is very easy to navigate. You will find most hosts prefer WHMCS over any other software out there. It was created specifically for hosting.