I sometimes ask myself this very question, but have a very different setup that needs to be considered. One with a hell of a lot of specialized input devices that all should be within comfortable reach, with more to come. (As it currently is, I have to move them around way too much, and the mouse is mounted a bit high for my liking due to the chair height, which just happens to be about right for the monitor height.)
Finding the ideal chair is just part of it, albeit a big one. I still have to think about how I'm going to place it and what arm rests or mounts I'll build around it. (I'd prefer not to have existing arm rests because they'll get in the way.) Furthermore, it has to sit high enough to keep my eyes level with my main monitor, but low enough that I can reach foot pedals. (This is why a 90-degree angle for the legs would NOT work with me.)
But the desk is also part of the problem. It's certainly wide enough for my purposes...if not for the drawers on both sides squeezing up precious space in the middle. Can't be bothered to replace it, though.
In short, if you're using more than a basic keyboard/mouse/single monitor setup, things are going to get very complicated, very quickly, even moreso than it already is. Take that into consideration if you need specialized peripherals.