Boglinswrote a review of La Sportiva TX4 Approach Shoe - Men's on May 3, 2016
Familiarity: I returned this product before using it
Fit: True to size
I ordered the TX3 and the TX2, and I tried on the TX4 locally. The TX4 and TX3 fit almost identically. They seem to be the same shoe, but with a leather upper on the TX4 and synthetic upper on the TX3. The forefoot on the TX3/4 is pretty wide, and it fit my wide forefoot well. Better than most Sportiva shoes, and way better than the Ganda.
The TX2's upper is much lower profile than the TX3/4. You can see it clearly in the photo I attached. In addition, the TX2 was much more snug on my wide forefoot. My 6th toe pushed outward uncomfortably on the TX2's upper. I didn't notice it on the TX3/4.
There is a weird bit of rubber on the sole at the outside of the ball of the foot as that I can image would help folks who supinate. Would be a detriment for people who over-pronate.
None of these shoes are as precise as the Ganda, and they probably won't climb as well. But they all should hike much more comfortably for me. I wound up returning the TX2 and keeping the TX3, despite the TX3 being heavier. A single size 45 TX2 weighed 10 ounces on my scale, and a size 45 TX3 weighed 13 ounces.