https://docs.google.com/spreadsheet/ccc?key=0ApzIz1YSh_e7dFRnb2ZTWl9LbkNtTDd0UmxzUVlGenc&usp=sharing@PointyFox: Added an entry for a gloss white (bleh) low-profile scissor switch keyboard by Macally.
EDIT: I looked at my laptop's keyboard, and discovered it uses scissor switches. I haven't had a good experience with it--trying to think up reasons why (might be because it gets hot, but then again, that's the laptop; or uncomfortable, but that's because I don't use it at a desk; maybe it's because the keys are equally flat; or maybe it's because I haven't had a chance to use it in a gaming context). It is definitely the quietest of the keyboards I own (Asus K60iJ keyboard > Eclipse > Blackwidow). All I know is that it's fatiguing to use, the Eclipse less so, and the linear red-switched Blackwidow the least.
@terran5992: That narrows it down to the Topre Type Heaven 104-key Keyboard, and the Realforce104UB for me anyway. The HHKB's might be superior in their mechanisms, but I really don't want to get a separate keypad.
@1pq: If the o-rings ruin the feel, I probably ought to go with Brown, since they are marginally quieter.
@TacticalStache: which ALPS or MX keyboards do you recommend (I don't think I have any ALPS keyboards on the list), and which MX switch do you recommend for the gaming and streaming application?
@SpAmRaY: 105KRO without having to go with the PS2 interface. There's other keyboards from Cooler Master other than the Osmium I put on the list, but they're more expensive.
@Linkbane: That would be the MX Red or Black for switch design, since they're functionally identical aside from the spring.
http://geekhack.org/index.php?topic=46449.0The lightest MX spring has a maximum average down actuation of 63.4, a whole 7.1g higher than Originative 45g springs. I have a rough idea of how heavy 7.1g is, it is like several vitamin pills. I can see how that would make a difference over the life of the keyboard. This also isn't counting lubrication of the keys to reduce the actuation force. The CM Storm QuickFire XT is the cheapest Cherry MX Red keyboard. I'm leaning from the others in the list and more towards that one--seems like MX keyboards have a mainstream appeal anyway.