Thanks!
I have read good things about MF Pentax and Minolta indeed. And Canon as well. Time will tell, I am not in serious need and can resist GAS quite well actually. I still want to play more with my Helios 44-2, fun to use (and quite interesting for portrait) but I find it hard to focus well. And there is no good reason for that: the travel is quite long and smooth. I need to exercise more!