These are my third pair of climbing shoes and they are by far my favorite pair I have bought. My friend and I both got these same shoes and she loves them too.
I have a slightly wider foot (because my feet are flat with no arch) and they fit great! I haven't been able to fit into La Sportiva, just because most pairs i have tried on are narrow and have a pretty good arch to them -- I do have skinny-footed friends that swear by them. I just don't have that same type of foot...so Five Tens work better for me.
I ordered a .5 size down, i like my climbing shoes snug and they did form to my foot pretty well. I can keep them on pretty much the whole time at the bouldering gym.
Anyway, overall I have been very pleased with these and I can honestly say that I love them!