We sent a KA-1222A brake/suppressor unit in to TTAG to test and review and they ended up testing 35 different muzzle devices (you can read the review and specs here). The KA-1222A scored very well, especially being a hybrid and not being angle ported. In addition to being one of the best performers in the category, it also was one of lightest and most compact of all categories
Although several of the devices in the "hybrid" category were actually comps/brakes, here were the results:

Here's the YouTube video of the test, notice the low flash signature of the KA-1222A compared to several of the other devices, expect to see even better results on the upcoming "flash suppression" test. (To skip to the KA-1222A part, click here)