I've got a couple of bikes with 11 speed shimano 105 groupsets - very nice it is too. I also run a winter hack on 9 speed sora kit. To be honest, I'm not really sure that I need the 105 stuff. I'm getting slower and older so why pay the extra? Horses for courses. Fiar play to shimano for making decent spec 'lower tier' kit that works well.
I've got a couple of bikes with 11 speed shimano 105 groupsets - very nice it is too. I also run a winter hack on 9 speed sora kit. To be honest, I'm not really sure that I need the 105 stuff. I'm getting slower and older so why pay the extra? Horses for courses. Fiar play to shimano for making decent spec 'lower tier' kit that works well.