loki993: Yes, MX Reds
are very light. If you like any kind of resistance when you type, you probably won't like them.
Yes, the springs in MX Clears
are slightly stiffer than the springs in MX Blacks. But Clears are also tactile, like MX Blues—you feel a "bump" when they actuate. That makes them feel more complicated, which can make them feel even heavier.
Blacks are smooth (no bump), and IMHO, they give just the right amount of resistance to make typing feel good. Like most mechanical switches, Cherry MXs actuate only halfway through their travel—so the farther you push them
past that point, the more time and effort you're wasting. Because Blacks are harder to bottom out ("mash"), you can learn to float along on them, typing as quickly and easily as possible. (Ironically, Reds are
too light to do that... Typing on them without bottoming out is more trouble than it's worth.)
You can probably tell by now, I think MX Blacks are awesome. If you have the dough for a new board, I highly recommend a
SteelSeries 6Gv2:
It's one of the most solid boards ever. With its compact steel case and first-class construction, it's gotten mostly 4- and 5-star reviews. There's no backlighting—and yes, it has a "big-ass" Enter key, but you quickly get used to that, and the rest is pure typing goodness.
You may get the best deal by ordering one
directly from SteelSeries for $99 plus free U.S. shipping. They're usually $10–20 more elsewhere, including eBay. Be sure to get one with Blacks, since they're also made with Reds.
Used boards with MX Blacks appear on eBay, but you have to look for them. CM Storms are good-quality, less expensive boards that include Black-switch versions. Besides gaming boards, some of Cherry Corp.'s Black-switch POS (retailing) boards turn up now and then that you can get in good shape for just $25–45. Deskthority's
Cherry MX Black page lists some specific Cherry boards with Blacks. If the switch color isn't shown in the photos or described in the text, you search
the Deskthority Wiki for certain model numbers too. Hope this helps! – A.