I have an Omega 30 and went from ASR to DT to Area 419.
The ASR system has its limitations. The locking collar is annoying to deal with when hot, carbon builds up and makes manipulation more difficult, and the teeth wear down pretty quickly. POI shift was generally consistent from removal to replacement but I would put it in last place of the 3 options.
Direct thread is nice as long as the muzzle threads are concentric and you are mindful of how much torque you apply. I would say the biggest issue is removing a hot DT can from one gun and putting it on a cold gun... I can guarantee you will have a bitch of a time removing the can from the second gun, especially if allowed to cool. POI shift was consistent from removal/replacement, even with different amounts of torque applied. I would recommend this option but only after the 419 kit.
Finally, the 419 system is my favorite of the 3, and it’s not particularly close. It does not require much torque for the can to stay in place and POI is exactly the same from removal to replacement. Additionally, I’m able to swap from brake to can, back to brake without changing my zero. POI shifts by a tenth or two between in this case, but not enough to require a different zero. I have the universal adapters on all of my barrels, 2 Hellfire brakes and 2 cans with the adapter. No such issues with stuck mounts, inconsistency, or really anything for that matter. Just a really good design.