Well, let's see -- I find myself looking at listings on eBay for 180 mm and even 165 mm lenses, when I already own a very acceptable 150/265 convertible and a 135 mm (and a 105 on a board, but that's from a 6x9 and good only for macro on 4x5). But I also own around 30 working cameras in 11 different formats and several different styles (16 mm in 10x14 and 13x17 frame, 35 mm half frame, 35 mm folder, rigid 35 mm VF, 35 mm RF, 35 mm SLR, 828 RF, 828 VF, 127 full frame simple, 127 4x4 simple, 6x9/6x4.5 dual folder, 6x6 simple, 6x6 folder, 6x6 TLR, 6x9 simple, 6x9 folder, 6x9 RF folder, 9x12 cm plate camera, 4x5 monorail, and the Speed -- and that's not even counting pinhole cameras), plus a few for parts.

Sigh. Sounds like I've got both.

At least it's not boring (to me)...