Ergonomics: What's a solid keyboard with firm key feel?

I had an ergonomic evaluation yesterday for my job. I do a lot of clerical work on the computer. When she tried to "correct" my positioning, she was basically appalled that I was using the keyboard on the laptop (Lenovo X230 on the docking station) instead of the keyboard on the adjustable tray. I told her that I didn't like the keyboard tray because it pushes me too far back, and I can't stand the feel of the regular keyboard; it's far too mushy and I'm quite accustomed to mechanical keyboards - I use the laptop keyboard because it just feels better although I prefer a standard keyboard layout. I said I'd use the keyboard tray if there were a better keyboard.

She recommended using a different keyboard or at the very least adjusting my chair height for the laptop dock (which requires a foot rest, and I'd much prefer to have my feet planted. Using my own hardware is basically against policy. She throw some recommendations my way, but had a lot of difficulty doing so because apparently most people want a softer keyboard feel whereas I want a firmer one. So she basically wants me to throw some keyboard suggestions her way so she can recommend them for ergonomic reasons.

I think the problem here is that many of the keyboards I'd like to use are way to flashy (LEDs, decals, general aesthetics) to really be taken seriously. I don't think I'd necessarily a mechanical keyboard, but I would like a keyboard with a firm feel. Any suggestions for a simple, firm feeling keyboard?