Muddyhandz, Skypilot02 here. The new F-70 and F-75 are really deep seeking machines. With that said, I will tell you, the first ones to be produced had several issues. The '75 I own, for instance, could not be used in town, or if you have a cell phone on in your pocket, as the electro magnetic interference (EMI), would cause such chattering the machine was useless. I am currently modifying mine, as the shield to stop EMI from the factory is graphite, the poorest and least expensive to buy. If you have ever been inside an older Fisher, I'm sure you noticed the aluminum "box" around the electronics. This is far superior to graphite, but of course, isn't as good as copper. The later machines produced seem to have had this problem addressed. Now: As for rugged construction, you will definitely notice a huge difference between, say, a 1266X and the F-75. This is due to the fact that the '75 uses a fiberglass handle on which to mount the display, and the fact that the stem that bolts to the display is very short and only goes down to the first screw in the handle. When you plug your coil in, the display head will actually deflect, or twist somewhat, appearing to be very weak. Operational issues include the fact that the battery case is too tall for the batteries, and if sat down in a regular manner on the ground, the machine may cut off. The discrimination on the '75 is also unlike anything ever seen before. The adjustments are really sensitive, and you can "notch out" either the upper or lower scale of each selected item. This can be very confusing for some users, but once the manual is studied and fully understood, they work great. I would recommend that if you buy one, make sure it has all the latest factory upgrades, because if not, they will charge you to upgrade it. The benefits of the '75 is the weight, the super depth and the longevity of battery life. Bottom line: The F-70 and F-75 have very similar electronics, with the exception of the '75 having the ability to be fine tuned, i.e., more adjustments. The F-70 has the head mounted on the pole instead of a handle, therefore is much more sturdy feeling. Very Important!!: If you take the time to learn the '75, and it's setup, I'm sure you will be very pleased with it. If not, then you may end up inventing vile words just to describe First Texas. I've posted a fix for the battery problem, and would suggest that you read SaginawIan's posts regarding this machine, as he was, like you, wary of the new detector. I will say he loves it now that he owns one! This is the nuts and bolts as best as I can give them to you. I currently own, or have owned, practically all the "top of the line detectors", so to speak, and humbly submit this to you, as I believe I can speak on this subject with as much authority as anyone else. If you have any questions, feel free to P.M. me and I'll do my best to answer them. Great hunting and good luck!!! Regards, Richard.