I'll never forget my first roll of 120 film that I developed. The sight of those big negs with bags of detail that you could see without the aid of a magnifying glass. Welcome to a wider (and squarer) world. I used the 500 both manual and motor driven semi professionally in the late seventies. They were both a delight to use.
I own a Hartblei 88 modified with a Hasselblad Acute Matte focussing screen and adapted to accept genuine Hasselblad backs. Not quite the same expeirience but close(ish)