In your original post you said you "don't care about sounds," which I take to mean you don't need presets or onboard programs. If that's the case, an M-Audio controllers is all you need. I think you can get them for around $99.
I think it's mistake to lock yourself in like that though. The day may come when you do want to play a riff for yourself without turning the computer on, or try playing a part using an instrument that isn't General MIDI to see what it sounds like, etc. In that case, you're just SOL.
I use an Alesis QS6.1 for all my programming, sequencing, and live audio/presets, as well as the sound module for my GM instrumentation (I also have
a Yamaha CS1x but it doesn't sound half as good.). There are only, what, 128 GM instruments to choose from if you go with a controller only, but I have 600+ onboard already, expandable by another 128 (actally double that) with an expansion card. (If you listen to some of my songs below, 99% the drums, 75% of the keyboards, and about 25% of the rhythm guitars are sequenced GM played through my Alesis acting as a soundcard. About 80% of the live keyboards are the Alesis.) I got mine used for $325 on ebay and couldn't be happier with it.
The Alesis is the black keyboard on the bottom.
Of course, if you already have another keyboard and only
need a dedicated triggering device, that's different. But I'm just saying that if this is your first keyboard buy, it will pay dividends many times over in the future to get something more versatile, even if you don't need the capability right away.
Good luck!
--TAC