I can also strongly recommend Gandi. Used them to manage 40+ domains for my old company. Professional and good coverage of the TLDs. Nice is also that you can

I can also strongly recommend Gandi. Used them to manage 40+ domains for my old company. Professional and good coverage of the TLDs. Nice is also that you can buy credits - that way I could renew a bunch of domains that expired at different times and filing only invoice to bookkeeping.