I've run Asics for over 15 years, landing mostly on the DS Trainer and DS Racer.  But for me, the Asics have been built up too much over the years and I've lost the feel for the road.  I lean more toward the minimal side of footwear.  I tried these MR890's on in the store and instantly loved the feel.  Very light, yet cushioned.  but also very close to the ground without alot of heel elevation.  My first run in them felt as if I had worn them for years, and I went 14 miles on day 1.  I guess I'm calling them a lightweight trainer, and longer distance racer. Great shoe