Back in the day when film was the only offering, used to lug around two Canon F1ns - one with black and white the other with slide film - invariably Kodachrome - 64 or 25asa. The latter was very contrasty as well as being very slow. Printed onto Ilford Cibachrome though gave fantastic results.
Moved house and lost my home dark room and fell out of love with photography until the early 2000s and got a Panasonic Lumix micro four thirds which was great but I hankered after full frame and eventually got a Sony A7r2 - its resolving power was amazing until I managed to wreck it beyond repair. Got a A74iv but found it wanting for fast moving stuff - animals, birds etc. Moved to the Alpha 1 with its eye watering price tag but it does effectively marry two cameras in one - or so I told myself. So far, it hasn’t disappointed.
As for favourite lenses, recall a guy in the film camera days when I was in a club demonstrating his Canon wide angle tilt and shift - an amazing piece of kit. I use the digital version on my Sony - no more tilting buildings or acres of empty foreground. With a tilt and shift lens, you can alter zone of focus both vertically and horizontally which can create weird perspective. If you’ve seen stills or moving wide angle images where people look like ants, it’s been shot on a tilt and shift lens.