I use a retina macbook pro so need to scale screen grabs to 50% size before saving so that they end up the 'correct' size when shared with other users. When I look at the saved files I am always disappointed by the quality. Lines which are near horizontal exhibit bad aliasing. The output from Skitch is so poor that I have taken to grabbing and annotating in skitch and then resizing as a separate operation in another application which maintains image quality (trying the lightweight 'RePix' at present which so far I like.) Also - a feature request. Could the 'crop / resize' control please remember in which mode it was last used and default to that when selected? Annoying to have to select to resize each time. I have to say I preferred the much greater ease of use of the old Skitch in this regard.