I am a very long time Asics Gel Nimbus customer. The first pair purchased was the 11's about 6-7 years ago when I got serious about running. I have owned model 11, 13 (2), 14 (2), 15 (3), 16 (2), 17 (3) and a pair of 18s. I have run over 25 half marathons and one full marathon all in Asics Gel Nimbus. I think that would make me somewhat of a fanboy. Now to the problem that everyone has addressed on the 19's. EVERY pair aforementioned I have purchased men's size 8 D. I have a normal gate, normal arch, and a generally narrow foot. Size 8 is what I have always purchased and they always fit fairly well. This HAS changed with the 19s.I read all the reviews, and was fairly discouraged by the what I read and even found some new 17s for the past season in light of this. However, my 17's are getting close to the magic retirement age of 400 miles, so I really needed to get new shoes. Here's what I did: I took advantage of Amazon's free shoe return with Prime, and purchased several different pairs of Nimbus 19s to really check out the sizes. As expected, size 8 were too darn small, just like everyone said. So they did make a substantial noticeable change to the size for sure. I went to 8.5, and guess what, the toe box was still too narrow for my narrow foot. How about 8 2E, nope, still too short. Finally, I had one last (and I mean last) try, and purchased the 8.5 2E. These fit, and I mean fit extremely well. In fact, after only a minute on the treadmill, I discovered that the sole was better fitting than any other Nimbus to date. I went on to whip off a 5k on the treadmill and to my amazement, they were outstanding. I was on the verge of giving up fully on the model and Asics, but it was all about getting the right fit.In closing, I'd say that Asics made huge mistake in their sizing on the 19's, and it cost them dearly, If you've noticed the 20's are already out before the new year, which usually never happens. They obviously know it was a mistake and are trying to quickly correct the issue with a new model. However, the bright side to this is that if you know the size that fits, you can snag a pair at a deep discount just now. Which I just did in buying a second pair. I'd recommend these shoes, but try a few pair and return what doesn't work. Also, make sure you actually RUN in them to test them out. They are exceptionally comfortable to run in, if you get the right size.