Nomad Z
Well-known
Adding the Leica option ruins the validity of the survey. Leica's are class signifiers and so everyone is going to say they want one, like how people by Rolexes even though they are tacky. Everyone will say they want a Leica because they want to believe they can afford one and be seen with one.
A year ago, I wanted to move to an M mount camera with a non-squinty finder and lever wind. My first option was to consider the manual Bessas (R2M for 35mm frame line). On looking around, it turned out that M3s and M2s in good condition were cheaper. A new Bessa was about £670, and I found an excellent M2 for £500 (and it didn't need a CLA). While the M2 doesn't have a meter (no big deal for me), it will take lenses with protruding rear elements. I wasn't willing to consider a used Bessa, because their long term reliability track record is a bit unknown (they haven't been around long enough), whereas Leica's is excellent.
While the validity of including Leica in the survey kinda depends on the purpose of the survey, in terms of weighing up the options when shopping for an M mount camera in the Bessa price range, a good, clean M3 or M2 is worthy of consideration.