I get frequent migraines and headaches (have one now) so Im not the best judge on that. I pretty much have a headache at every match but not sure if its from blast or just me.
The MAV is much more pleasant than any brake out there. I know it meters close to bare muzzle DB reduction but its a suppressor and controls the blast very well.
Another option is BOSS. I shot a match a few weeks ago with a guy running one. I was SUPER impressed by the sound, blast and recoil reduction of it. I legit thought he was shooting a suppressed .223 as the gun didn't move when he shot and was so quiet. Turns out he was shooting a dasher. The owner was at the match and after talking to him I ordered one. IMO its one of the better braked cans I have been around and liked it so much I decided to order one. Its sitting at my FFL now.
Its cheaper than the MAV, in stock unlike the mav, cheaper than the TBAC RR and wait time is MUCH shorter. Its a titanium and stainless can so its pretty light as well. Its only a 1.5" can so its amazing how well it performs for its size. I think the MAGNUS RR is just too big and the brake is too big for these small 6 mm BR based cartridges. The smaller can handles it much better and uses the gas to keep muzzle rise down much more efficiently.