In my experience, RFs are "quicker on the draw" only if they are used so often everything works intuitively. I love my Leica M6; but an Ollie OM with a 28 or 35 would be a great choice in an slr.
If does not mind the vagaries of soviet-built cameras, some of the Feds and Zorkis can be very good picture takers. I have a FED 2 with a tessar-formula, lanthium-glass lens which cuts a very sharp image and it cost me 30 bucks, incl. shipping from the Ukraine. The diopter-correction on the RF is jammed, but it still focuses and frames correctly and I am sure it could be fixed, but with my bifocals perched atop my pate, everything is kinda blurry anyway. And besides, my FEd has red leatherette covering, dontcha know. I also have.... o.k......., here it comes , a Canonet GIII. Which is compact, quiet, has a parallax correcting viewfinder frame, a sharp-cutting six element lens, built in meter, auto/manual aperture selection, auto flash exposure by dialing in the GN; dedicated auto-flash with the Canolite D. And, oh , yes, cost me 20 bucks off Craig's list.
The M6 is always my RF of choice, but..........