Just out of curiosity where are you going to move your domains? I own just over 30 domains all at GoDaddy and I'd move them over the massive amounts of cross selling and insanely cluttered UI.
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I've used godaddy, namecheap, and 1&1, but ended up switching all my domains to name.com. One of the best interfaces I've used as it doesn't try to abstract the DNS records from you. That was one of my biggest issues with 1&1 and godaddy - their interface made it so that I never knew exactly what my DNS settings were, just what the spoon-fed messages that I was given told me. The only "abstracted" thing that they do is provide a one-click solution for setting the dns entries for google apps (which you can still manually edit, as they appear in your DNS records). Here's some screenshots of the backend:
Seriously, try it. I liked them so much that I paid to have my other domains transfered to them. That alone should show you how much I enjoy it over the others I've tried.
Honestly I haven't done enough research, but I completely agree with the OP. I'd rather pay double than to have to sift through godaddys utter bullshit of a UI.
I've heard they have a less powerful DNS interface but I run my own DNS servers so I've never noticed.