I choose strings not only for their sound but also how they feel. Dr Tite Fits are my favourite because of that. They feel better compared to other brands, which to me always seemed a bit off. That's a personal preference of course.
Now the sound is phenomenal. Clear, tight and punchy. They have that snappy sound without being too harsh. I previously tried Hi Beams but I found them to be too bright without enough body. These are a little less bright but with much more improved body.
I don't think they last noticeably longer than other brands, but they maintain a fresh sound a lot longer.
Overall, these are great strings irrelevant of the gauge. Highly recommended.