Mic77-
I have a Medford TFF-4 and I can give you a quick review. Of course, if you have any specific questions, I can try to answer those as well.
I've had the knife just under a year. I have the older style, with the false edge on the last inch or so on the top of the blade and handle with the green anodized aluminum presentation side of the handle. The newer versions usually don't have a false edge and are all titanium. If I have a chance, I'll try to post some pics later.
I'm serving in Afghanistan right now and my TFF-4 is in my pocket as I type this. That's as strong an endorsement as I can give. But this knife may not be for everyone. If you are looking for a flipper where the blade flings out as fast as you move your finger, this isn't the knife for you. I have to put a little wrist action on the knife to get the blade out. Every time. The handle is a block. This isn't a Spyderco or Hinderer that fits your hand like a glove. I've used the knife plenty and never had any "hot spots" develop, but others may prefer a more ergonomic grip. Finally, the blade length is a little short in relation to the handle. Don't get me wrong, there is plenty of steel out there, but this is not a Caly 3.5 or BM 940, where every bit of cutting edge is maximized vis a vis the handle length.
I'd compare this knife to a 1911 pistol. The 1911 doesn't hold that many shots compared to other full-sized handguns. The grip is a bit of a block. It's not as ergonomic as some newer designs. It's maybe a little heavy. But for some folks, it's the only one that will do. Personally, I think this is great duty knife and a fine EDC. But I realize that it's not for everyone. But it's not produced anymore (at least it's not advertised on the web site) and almost no one has a knife like this. If you like having some exclusivity in your knife and/or see yourself as a 1911 guy, this may be a fit for you.
Let me know if you have any specific questions and best of luck in your decision.
BUDACODE