MickTwin,
If you do your searching in discrimination mode, the basic performance of the Delta is just about the same as the Gamma and Omega. And it's pick-up-and-go easy to use. Priced like a beginner machine (and an excellent beginner machine) but there are guys who have a whole arsenal of expensive machines who still like the Delta as a backup or loaner. Hard to find anyone with a Delta who wants to let go of it.
The Gamma is functionally almost the same thing as the Omega, but by the time you're in that price range, most folks would rather pay a little more and get the Omega because it's slightly more ergonomic and most people like the user interface a lot better.
You probably see where I'm headed with this. For someone just getting back into the hobby, the Delta is a lot more bang for the buck. And, even if you later want to get a fancier machine, you'll probably still want to keep the Delta. And if you get a DD accessory coil for the Delta, it'll be compatible with the Omega, Gold Bug Pro, or Tek G2 if one of those is the fancier machine you move up to.
BTW, the 1260-X was introduced in April 1982 (I was the engineer), so you must have got darn near the first one off the production line. Thanks for buying it, the 1260-X was Fisher's clean slate fresh start and you helped bring Fisher back from the edge of bankruptcy.
--Dave J.
Chief Designer, FTP-Fisher