That's a great question and your and Keith's thoughts around the Omega being a wise choice to compliment the T-2 or F-75 are right on track based on my experience. I try and resist "pigeonholing" a detector into single catagories such as relic or coin because the key is gaining the experience in multi situations. Having said that, I continue to check real time in ground targets (mostly coins around here) with the Omega or Gamma against the T-2, F-75, Explorers, X-Terras, Aces, et all and the operating characteristics of the Omega and Gamma continue to rise to the top, especially in deep old coin hunting in trashy areas which is exactly where most of the remaining ones are. The audio it has will consistantly make me stop and further investigate tough targets that others won't. One of the more famous detecting resources touts "effective depth", which is basically if you can't hear it in a way that makes you stop and really work through the multi-targets, you will miss a lot. I couldn't agree more with that concept and the Omega/Gamma are my best coin hunting friends for that. It's not JUST about the speed of the detector or sweep speed or coil size and design but more about the total package. Now for my usual disclaimer...opinions and preferences may and will vary. If you're willing to do the work required to develop your own opinions based on actual personal field experience, you'll enjoy this hobby up to its potential.