I think that the best remote that you can get on the market today is a PDA with NetRemote. I have owned several remotes now, e.g. Multi Remote from Sony, Philips ProntoNEO and ProntoPro. My Dell Axim X3 that I have now is the best! Some PDA could have trouble with the IR length but I think it could be solved with an extender, but my Avim have the same IR Length as my ProntoNEO so its great!

You can put as many devices as you want to a ProntoPro or a PDA with e.g. NetRemote, so the only limitation you have with a Pronto Pro is the memory, and a PDA have as much memory as you want :)

Buy a PDA and a remote software (extender card if the IR is poor in the PDA or buy a Axim X3 :). You will not be disappointed!