I'd vote for .nu (if the thing would let me vote!). I have one .nu that I would love to transfer as I am not happy with the company I originally bought it with. But I've not seen anywhere else that can quote such a good price on a .nu domain. At the moment I am paying $56 for two years (which works out at around £29 for me). If you could match that, or better it, I'd transfer my domain to you as fast as my fingers can type!