I use spd-sl and have or have had several models including r-540 and DA. All have been easy enough to dial in and since I'm used to them I don't find clipping in takes much effort. I think there is a whopping 2 ounce total difference in weight between a pair of 540s and the DA so I don't sweat it. One difference you may notice if you do a lot of riding on one pair is that the 540s just have a glued on plastic contact plate whereas all of the higher models have screw on replaceable metal contact plate.