Love this shoe
I cannot say enough good things about this shoe. They are light a monkeys foot on steep overhangs, edge well, smear fantastically, and the heel cup heel hooks like a dream. They have become my every climb shoe, and I rarely regret it ;p
I have these in a 43 which is about half a size US down from my regular shoe size. The toe box on my left foot is a bit tighter than perfect, and as it doesn't really stretch out, it will always be so.
If you find the Solutions to be a bit uncomfortable, than I would highly recommend looking into either these or the Testarossa.