We now have both the iFly Tablet and the Tripltek tablets and can compare the two. They are similar in size, with the Tripltek being ½" longer, width is the same. The iFly tablet is thicker.
The iFly tablet weighs 30.2 oz., the Tripltek is 25.6 oz., both with a RAM ball installed.
Both feel very rugged. We haven't flown with the iFly tablet enough to vouch for it's ability to handle heat, but the Tripltek worked great in this summer's 100+ temps for several hours in the windshield corner in the C182. I expect the same from the iFLy.
I took side-by-side photos of them in full sunlight, partial shade, and inside. My impression is that the Tripltek is brighter, but the iFly has more contrast. It would be hard to have to decide which is better based on the screens. Both blow away the 740, Samsung Galaxy Tab A, iPad mini, etc.
Both are far more responsive than the 740 - it is slow compared to these (also much older).
I was concerned that a right-angle USB-C cord would not fit in the recessed socket on the iFly tablet, but it does and works fine.
Photos attached.
My only complaint about the iFly tablet is that it will not fit the panel mount with the RAM ball attached. This is only an issue because I plan to move it between two aircraft, one using the RAM mount, the other has the docking unit mounted in the panel. Also, the supplied mounting screws for the RAM ball are almost too small for the holes in the RAM ball.