Korg nanoKONTROL.
1: Very affordable. Small, durable, compact, USB powered(plugs right into your USB port).
2: 4 banks. Each bank has 9 faders(for 36 total), 9 knobs(36 total) and 2 buttons per "channel"(18 total per bank, 72 buttons total). Not bad for a very inexpensive surface.
3: While in user mode, you're going to want to set your channels you want manual over-ride to HTP or LTP. I ran into this issue last night when I wanted to give my white scene 75% intensity on dimming, and I was "WTF... I can't bring it down..." Excuse me, but I was using teh mouse, I forgot to hook up my nanoKONTROL, but it really didn't matter as I was in USER mode, and oops, regardless, I didn't set my dimmer channel to HTP/LTP. So, you have to keep this in mind.
These items are readily available in both black and white. I went with white, it looked better to me, but some people may like the black better, it looks cool too.
The concept behind the nanoKontrol was DAW applications. I know I'm not supposed to mention price, but a JLCooper CS102 runs around $700-800 street(new), and mind you, it's a great bit of gear, but is outdated in todays era of motorized automation. I have one, and I really like it and I use it with my ancient ProTools 442 rig.
For like less than 10% of that cost, the Korg nanoKONTROL has pretty much totally replaced the CS102. Yes, there are some things the CS102 can do better, but for the most part, I don't need it. Plus, there is a JLCooper CS102 profile available through Sweetwater for free that when loaded, makes the nanoKontrol emulate(within limits) a CS102, because ProTools still supports the still made CS102. I also use this controller with my more current Pro Tools M-Powered system(using an M-Audio Firewire 410 interface).
I've been pleased with the korg nanoKONTROL and have spoken of it frequently on the forum. I've also bought the nanoKEY to help with composition, and the nanoPAD to help with MIDI triggering of other apps(Ableton Live mainly).
Cheap, affordable, compact, durable and easy to use. Way exceeds your requirements for faders and buttons. This might be a good item to check out.