For midi on a PC i would recommend a good controler keyboard from M-audio, Novation or Alesis. If your not looking for portable get a PCI soundcard like a audiophile from m-audio. theres alot of USB/firwire low latency devices out there but there true latency is not as good as pci. most of them have internal buffers that stop pops and crackle but add a few ms to your final latency. I have an audiophile in my second pc its old but has rock solid drivers.
If your pressed for space something like the M-Audio KEYSTUDIO 49I would be a good choice. I havent had first hand experience with it but by the spec it seams like you get alot for your money. It does midi audio and has lots of keys. I used to work for Yamaha and i love there pro end stuff but the PSR range is not what you want to be looking at.
keystudio 49I. read some reviews see what the drivers are like first.
http://www.m-audio.com/products/en_us/KeyStudio49i-main.html
If your pressed for space something like the M-Audio KEYSTUDIO 49I would be a good choice. I havent had first hand experience with it but by the spec it seams like you get alot for your money. It does midi audio and has lots of keys. I used to work for Yamaha and i love there pro end stuff but the PSR range is not what you want to be looking at.
keystudio 49I. read some reviews see what the drivers are like first.
http://www.m-audio.com/products/en_us/KeyStudio49i-main.html