without a doubt;Hasselblad 500 c or cm,old distinguished and timelessly beautiful.
Ralph is right, any Hasselblad from the 500 series must be the coolest medium format ever.
In my honest opinion I've yet to see anything that looks cooler than an RB67 or RZ67, just find me another MF camera with as many buttons, switches, levers, knobs, and other assorted doodads. Except maybe the GX680, but it's battery dependent which is not my cup of tea.
I have an old beat up Rollei Automat that gets its fair share of comments when I use it, but I recently fell in love with the Kowa 6. I just got one and developed the negatives. Really lives up to the "Japanese Hasselblad" moniker that gets tossed around. Maybe not so much mechanically (soft gearing and jam prone from time to time, but the glass in my opinion is top notch.
I fail to understand the mentality of a person whose vocabulary is limited in terms of approbation to "cool".