Ive gotten pretty heavy into suppressors lately AND im thinking about picking up a Tavor.
I will most likely run my SDN-6 on it at first. If i decide to buy a dedicated 556 can, the Sure-fire is at the top of a very short list.
I looked at the OSS cans at SHOT and they looked good, but as Theo said it an untested and new design. With the cost of a can + tax stamp + a long wait for approval, im not going to be the test case.
I'll play it safe and get a can PROVEN to work and last.