mar3169565 wrote an answer about La Sportiva Testarossa Vibram XS Grip2 Climbing Shoe on May 23, 2011
I used to wear the Testarossa and I loved them. I have a pretty narrow heal but these hold great on very agressive heal hooks. And they are relatively comfortable considering how agressively downturned they are. The only thing I'm crazy about is having to lace them up when bouldering so I ended up replacing them with the Solution. I was told that the Solution is basically just the velcro version of the Testarossa. Not so.
Whereas the Testarossa was comfortable, the Solutions are unbearable. I'm not sure exactly what the differences are. However, suffice it to say, they are not the same shoe. If one of the two works for you, my advice is to stick to what you like.