I don't think people are switching just to be switching. I think there is probably a reason they want to TRY something different.
I use the Swift LT for Her & I like it fairly well, but have a problem with the straps slipping & then have air leaks. If I tighten the straps I end up with a sore nose & the back of my head (where the straps are) also gets tender.
So, I would just like to find an answer for the comfort area.