Bushmaster will no longer permanently attach a Vortex flash hider to the barrel, because they tend to bend and disable the weapon.
Go with the phantom. It works just as well and can also be used as a bottle opener.
When the Vortex was introduced I didn't beleive the hype. So I bought one, and it works great!
When the phantom was introduced I didn't think that it could out suppress the Vortex... and I was right.
It worked just as well as the Vortex and it wasn't as prone to breakage.
Go with the phantom!