I'd say mine's a little of both, though my 'flex (2.8 E) from the late 50's isn't so much nostalgia per se, as it has 10+ years on me. I've only had it for 3 or so months and it's my first TLR, but it's been a joy to use. I'm still getting used to the left/right inversion, but that's only when the kids are running around. It can get as 'serious' as I need it to relative to it's optics - granted I won't be using flash with it. I'm looking forward to bringing it along on summer vacation. Maybe do a small portfolio of my uncle's dairy farm where I used to spend a few weeks each year working in the summer.