I made the decision to sell off most of my EF glass (24-70, 50, 35, 45). SO worth it. Images are tack sharp throughout the zoom range. Bokeh is nice, not ultra buttery but pleasing none the less. Focus speed is unreal in well let environments. Most complaints are about the size, weight and balance on the body. Well it'll replace most of your glass in that range, so you'll have more space in your bag. It is quite heavy, I'm a bigger guy, so I don't mind much. I also use the battery grip, which I feel improves the balance a great deal.