I would say about their "sought after-ness?" imho, they are simple, accurate, forgiving, well built, accurate, easy to care for, accurate, light weight, attractive, and last but not least, accurate. Other than maybe a couple that might have a problem with the qla, they are what the name implies, the Omega, the last ML you will need to buy. The design is so good that the CVA knockoff Kodiak was every bit as good as the Omega. It has a great feel and balance that's just so hard to beat.
I love to mod all my guns but its tough to find a way to improve these guns.