These shoes do run a bit small, but if you're like me and like the aggressive fit, then they are perfect (I went .5 size down from my street shoe size). These shoes are somewhat soft, but goodness do they edge well. Furthermore, after about 3 bouldering sessions they broke in and have been extremely comfortable since, though I do still take them off pretty often (Walking around in downturned shoes isn't the most comfy thing I've ever done).
I also absolutely love the heel. I have a low volume heel so shoes like the LS Solution tend to have a ton of dead space and slip off when pulling a really aggressive heel hook. I have never had an issue with a slipping heel cup in these shoes. I definitely recommend them!
This review was written in the old system and had content requirements that are different than reviews written today.