I'm looking for the best integrated domain reseller system for our site. Something that can be transparent and not have to worry about clients getting email for hosting services from their reseller (like I've seen here from others using dotster). Low or No upfront costs would really be a plus.

Any new services or experiences with existing would be appreciated.

Thanks

I have heard
http://www.enom.com/
offers what you are looking for. I have yet to try them myself though.

If you want to sign up with enom .. get ready to pay $400 up front .. :)

I'd suggest go with dotster, not only you can integrate them easily to your website .. but also they will do everything including billing and support.