Fleshtones look like crap with Nikons, Canons have lousy metering, Pentaxes have crummy auto-focus. Everything else is worse.
Use film
We don't live in a B&W world in case you haven't noticed.
The good thing about Canon is that its lens mount allows me to use any lens from any maker from any era that I want via adapters. I don't own any Canon glass anymore.
Nikon. I'm a pro.
Not if you have a D200 with a Fuji sensor in it. It even has "film" in the name; Fujifilm S5 Pro. 😉