My favourite registrar has to be NameCheap, I have domains registered with NameCheap, GoDaddy and 123-Reg but the easiest one I used to register and also modify domains was NameCheap, their support is also good.

my vote goes to namecheap.

i use godaddy as registrar. 10 bucks across the board for a domain.

Any ideas on who can do it for less-- hidden fees included?

Go Daddy for me.

Here are some of the best registrar in the market today, Namecheap, 1&1, godaddy, name.com and Gandi. I think the best thing that you should do is to make some research about each of them so that you will have an idea of how each of them work, their features and prices. In that way, you can choose for yourself which one is the best for you