My Dad had an OM-1, and later I bought an OM-D E-M5. Its amazing how much sentiment affects decisions. I have and love both those cameras, many happy memories.
Definitely - my favorite film camera was a Pen F half-frame with the big gothic "F" on the front. Old, but really compact (and worked well-enough with lens adapters, right until it got stolen a couple years back).
The feel of the thing definitely got me to buying the E-M5.