I have both, stock lenght Spmaxx and the L's, with the L's you get an extra 1/2" travel on compression just because the sway bar inhibit some of it when one corner tucks up all the way in the air. I switched to the stock lenght because i run 37's and i need all the clearance i can get being i'm lifted about 2.75" in the front.
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Do not overtight the SPmaxx bushings, they should not be torqued down like stockers. Fact you don't want to crush those bushings down like you will with the factory ones. They're poly and they need to be a little loose otherwise you'll damage them.
They can be a little noisy because of this (the shaft might hit the cups and make some noise here and there). other than that they will take a beating like no other sway bar link available for our trucks out there except for the Dirt King ones
I replaced the stockers (they had 70k miles) with aftermarket ones that looked like stockers and the bushings lasted one day in the desert having fun in the trail. The bushings disintegrated l litereally.lol
I've had the SPmaxx ones several times in the same trails with even more speed and the bushings look brand new.