I am running 12 inch macbook at 1152x720 pixels, which is a 1/4 of native resolution of 2304x1440. I do feel that it makes everything slightly sharper and faster given that no scaling is involved.
Integer resolutions are the best, but Apple's system does a remarkably good job at making the other resolutions look great. I'm using http://www.pupil.io as a quick resolution switcher, generally at 1680x1050 as I find anything less to require a lot more scrolling than I like. For me the whole point of a high-resolution screen is that elements are sharp enough to allow for a large workspace on a tiny screen. 1152x720 is less real estate than I was using 10 years ago!
Integer resolutions are the best, but Apple's system does a remarkably good job at making the other resolutions look great. I'm using http://www.pupil.io as a quick resolution switcher, generally at 1680x1050 as I find anything less to require a lot more scrolling than I like. For me the whole point of a high-resolution screen is that elements are sharp enough to allow for a large workspace on a tiny screen. 1152x720 is less real estate than I was using 10 years ago!
I'm all for keeping threads on track, but what exactly do you expect for a reply when the OP started a thread to simply state they like X resolution? Not too much more to say other than offer an opinion of what resolution we like.
Technically, there is always scaling involved. What you're referring to is essentially integer scaling - there's no interpolation between native resolution and the scaled resolution.
While integer scaling will generally look sharpest because there's no pixel interpolation, using a lower scaled resolution that renders on-screen elements larger will inherently make those elements look "sharper" as well (assuming retina-quality elements are provided). Text, icons and hi-res images are going to display more detail because more pixels are making up a larger on-screen element. It seems kind of obvious, but often overlooked in these discussions.