I got a new SOTAR this summer, and came across the same conundrum. Ended up going standard. Since there is less bouyancy in touch with the later, the boat rides a bit lower, and with less tube wall in front, the front passengers get more wet. Not something I was interested in. Guides like to use them for the splash effect in whitewater, supposedly more excitement for the passengers. I don't recall if they say they track or spin better. I expected them to punch through waves differently, some say better, some say they don't have the oomph to do so as much with the smaller tube in front. SOTAR takes the dimension off the bottom of the tubes, I think (?) so the kick was to be the same. Supposedly more room for gear, which is likely true, but an inch or two isn't worth it to me. Especially if they take the dimension off the bottom of the tubes, the stern floor is going to be comparably higher, so you'd lose vertical volume. With that, your gear would ride higher than, it seemed to me.
After all that, I decided to just stick with what is proven, I am not one to go after the latest and greatest, since it's rarely the greatest unless it becomes the norm, which hasn't happened.
So if you have some specific desires, or any of those factors really appeal to you, you might like them.
Living in Montana, boating in Idaho