Franka Rolfix with Radionar lens 6x9 with Fuji Acros 100, Bronica ETRS for "street shooting 4th of July), really enjoying the 120 format lately, and a Nikon N80 (Kodachrome for fireworks of course!).
I am 47, and have been a photo hobbyist since about 1977, worked for a studio for 5 years, owned a Bronica ETRS back in the 80s, and various Nikon equipment. Since purchasing the Franka Rolfix and shooting 6x9cm B&W and making my own prints again in a "wet darkroom" I realized something. All the money I spent on 35mm and 645 format equipment over the years was just an attempt to achieve through technology (better lenses?) what the older larger formats could achieve by sheer size. I am not 100 percent sure but I think the negatives from my Frank Rolfix (which I got on E-bay for under $50 US) are sharper than those shot with my Bronica ETRS, at least they appear sharper on the print easel under the focusing aid, and the 11x14 prints are outstanding (yes a bit of softness in the corners, but I like the effect).
I am not sure that moving up to 4x5 would fit my shooting style, but a Graflex Century with a 6x9 back (or two, or three), and some lens movement seems very attractive, and I would not have to upgrade my darkroom.
And my Dad said I would never learn anything.