Well, thank you all for your inputs.
Just picked the first roll I burned through that 0.85 M7 (Superia 400) - it came beautifully, and that was utilizing DX and AE (with my minor corrections when necessary). Nearly all exposures (and most are indoors) cam out really fine, with just a few a stop under that rather due to my fault of fogetting to compensate properly the AE.
The camera proved to be useful in AE when needed, the shutter is suprisingly quieter then of my M6 and 50mm cron fits nicely with just optimum frames spacing around. In a few times trying deliberately to cath some flare in the finder, I wasn't able to achieve that (or perhaps these were not the most appropriate situations).
I'm all over it, made up my mind, called the seller and we are set.
I guess I can't go wrong for 1450 US$ for 2854xxxx nice user 0.85 M7...🙂
Now need to sell my M3 SS treated by Youxin to breathe a new life into her....