I didn't notice any difference in performance, the performance benefit from knee sleeves being fairly minimal anyway. But there's a definite difference in terms of comfort and longevity. The slipping on the TKs I refer to is due to the sweat buildup under the knee sleeves, which you don't get to the same degree with the Titans/Rehband/SBD design.
FWIW I ended up paying $88 including shipping for my pair of Rehbands from Jackals Gym. So yes, they are a better choice than SBD as well.
But the SBD sizing is an advantage if you have skinnier legs (in particular women) or much bigger legs. Rehands are fine for everything in between. The SBDs are also apparently a bit longer so they will cover the calf and quad more as well, which could make them slightly more comfortable (but probably harder to get on).
Also FWIW there is a new rule in the IPF that you can only wear knee sleeves that you can put on without assistance.