Thank you Zhangyue, and you read my mind what I was thinking. A new Sony A7ii or a used M8, though I wanted a FF camera really. Plus, after spending the day reading much on Ken Rockwell's great Leica articles, I'm very disappointed in Kens article comparing the A7 to the 5D3 to the M240. Wow! So, not good! This also corresponds with your A experience too. Kind of puts a damper on my expectations.
I also sadly learned that my R lenses won't work. (But at the very least, I'll prob make money selling them if I go the M route) And,the funds from the 90 APO and 28mm PC SA would go a long way. Yet I remain skeptical of me producing the quality I see here with a rangefinder and my crap vision and tremors. But I found a Leica dealer with used M8 &9s that I can check out after the holidays.