That's a good question. I'm not sure what is the answer to your question. I'll do some Googling and get back to you if I discover an good answer. You should email the people at iPage as they probably could give you an answer..
I vote resellerclub - we use their system for WSDReg and have found them to be rock solid...
There's member opinions there dating back over the last few years. Anyone asking this question should definitely look there and do a search on NP too, this question is asked hundreds of times and the answers are pretty much always the same..
I would say most of the companies on your voting list suck in some way or another. My current fav is domainsite or a resellerclub reseller...
Namecheap. They are simple and have coupons to save money. Haven't had any bad experiences..
I use Omnis. They offer domains for a great price, and are very flexible...
Namecheap because I've had no problems with them and love the coupons they offer...
We also like their system. Our company has reseller accounts with Resellerclub, Godaddy, Enom and Registerfly. But prices at GD are high. Enom is fine, Registerfly support is really bad..
But we have shifted to Resellerclub and offer their storefront for our customers and resellers and it is really good at those prices. But I have seen that people do not prefer ResellerClub, don't understand the reason, but people love GD and Namecheap (even more than Enom)..
So, Moniker, GD and namecheap top the list till now..
I prefer NameCheap, simply because that's what I've generally used. I like Moniker as well. GoDaddy really bothers me. I'm not sure why. They just don't sit well with me..
I would definitely say Moniker - great price and best service! Can't beat that combination.
Their prices are good, but I have seen their support not very good when we had to transfer 4 domains to our account at moniker..
I use namecheap - love their control panel, their prices are pretty good (with discounts), and I've never had a problem with them yet...
Namecheap is good, their inteface is nice as well..
Best service, best price and best security. A very rare combo and a wonderful company to work with as a domainer..
NameCheap - Nice interface, good support, prices higher than average registrar but I like their features...
Moniker- quick support, easy to use and very secure...
I wont agree to this, they show too many promotions which most people do not want..