[lutorm]

I've never tried that keyboard, but I'm on my fourth Kinesis Advantage over 14 years or so. I'm not sure I would like the TEK, I want my keyboard to be a bit wider so I don't have to squeeze my hands together. The angling avoids needing to put your wrists into constant ulnar deviation, though, which is the worst part about normal keyboards. And I like the idea of putting extra keys by the index fingers, I'd much rather use those than stretch the pinky. Ultimately, you'd have to try them and see which ones fit you.

As for the pedals, I use them for shift/control, which avoids having to do multiple-key chords. These days I have almost no RSI problems, so I could probably get by without them, but it made a significant difference when it was worse.

As for cost: if you're a programmer, your hands are your life. Investing in proper tools (keyboards, adjustable keyboard trays, chairs) is worth much more than that, IMHO.