Man, tp, you really love pushing those ergo-clears, huh? Perhaps I should make myself ergo-clear. I think the springs in the browns and blues are too light and enjoy the heavier clears and whites at least some of the time. Also, because of the strong bump I find myself bottoming out less on the clears, so the overall force isn't even that high.
At first, I found whites a bit tiring. But then I decided rather than trying to make my switches lighter, my fingers should be stronger. This, I believe, is the right attitude, at least for me, and echoes how I think one should approach life in general.
Now, regarding the various combinations. Why would browns be gritty but clears aren't considered so? Since, if they both have heavy springs, the only difference is that the bump on the clear is more? Is the bump just so light on the browns that if you add spring weight it doesn't feel much like a bump at all?
Also, am I correct in assuming that the clear springs are somewhat stronger than the black ones, but not by much? So if I want to have keyboards with a wide gamut of force, I should use the black, so I have something lighter than clears but heavier than stock blues or browns?