Hey Monte,
I think everybody likes the styling and build of the Fisher F75 / Teknetics T2. Light in hand, easy to adjust / select modes and options. Arguably the BEST detector housing for this type of detector.
I lost my CoRe to a sudden rain storm, but Gregg was kind enough to offer one of his as a replacement if i wanted. I gave it some serious consideration. If it came with added Iron Audio AND the ability to adjust the audio tones so I can hear them better (mid-tone of 3 tones was bad for me) I would have been all in. If you added an F75 housing with the 5" DD OOR coil and the 7" Concentric coil just for hunting ghost towns it would be the cats meow.
Unfortunately, I don't think Dilek and company would have more than a handful of requests from folks frequenting this forum for something like this. Maybe I'm wrong there. It does seem that the CoRe was a special unit whose likability and uniqueness was lost in later revisions to their lineup. The CoRe with the 5" OOR coil has simply been a great producer in those western ghost towns.
Rich