I'd say the latest miners are fair and do not call for any more attention from the devs. The official miners appear to be fairly decent now and not far off from (some of) the custom ones (that is within 10-15% range).


PS I'd like to share a small success story I had: Just by upgrading my Win AMD graphics drivers from 14.9 to 15.11 beta I got over 50% improvement for my hash rate (R9 290 now at 850mhs, 940mhs with some OC).

Hope this will help some other small timers because the big fish know all the tricks anyway.


Happy mining!