Having owned for a period of time both the Sony 24mm (2.5 years) and the Touit 32mm (6 months), I think I can contribute a little from my own experience.
I really enjoy looking at the images taken with the Touit 32mm, so much that I have been using that most of the time now. The FL works very well for me, who mainly take photos of my family (mostly my young daughters). I can take half body portraits of them with a decent perspective (the 24mm sometimes creates unpleasant perspective when shooting too close) without having to be far away from them. It was necessary because at times I am the only person around watching them (imagine having two toddlers running around) in the public and I do not want to stand too far away. The AF was slow (below my acceptance level for shooting moving kids) when I was using it with the Nex-6. But it has all been resolved with the A6300. It is still not as fast as the 24mm, but close, which says a lot since the 24mm is lightning fast on the 6300. It is certainly more than enough for me to use AF-C. I have even used it to do tracking when my kids are on a fast swing and got decent result (as long as I have the shutter speed set to 1/500s or faster). There are some missed shots, but not too many. It is definitely a pleasure to use. Bokeh is harsher than the 24mm, but if I want bokeh I would go for a longer FL (50-85mm for example). It does require a bit more work to get photos to the way I want.
Sample of the Touit 32:
Having said that, the 24mm is at another level. It might not be optically superior than the Touit, but it is an extremely easy to use, very forgiving, and fool-proof lens. It is like comparing driving a sophisticated all-wheel-drive, well-balanced luxurious sport sedan to a all muscle high-power rear-wheel-drive car. While for the Touit, I have to work hard to get it work for me, the Sony 24mm does everything for me, and does it well. I don't get missed shots with the 24mm. I can mess up with my setting (not ideal setting) and it will still deliver. Just to give an example to illustrate:
This was shot at f/2.0, focus on my wife. It is still very sharp all around, very little CA (I did not fix any CA in post). I also found that with the 24mm, I need only very little post processing to make the photo look good and pop. So overall, I feel that the 24mm offers a lot of things, especially to beginners or those who do not want to fiddle with setting and post-processing. Other lens might do the same or better in one or some of those categories (e.g., sharper, optics, etc.). But there are also compromises, and what those other lenses are superior, they are not superior by a lot. On the other hand, the 24mm offers all of those in one single package (lightning fast AF, sharp all across, nice color and contrast, little CA, etc.). For people who knows what they are doing and do not mind more work, they can find "better deals" else where, but that does not mean the 24mm does not worth its cost.
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-Daniel