Fuji W3 (3D) is turning out to be my favorite (making stereo 4x6 prints, mounting them, and viewing through a mirrored stereo-viewer). I also use a Sony A7s, but it seems that I don't have enough time to fiddle around with photoshop. So, after recently swearing off film, I find I miss the simplicity, and a Fuji GF670 arrived in the mail the other day. With it, I'll likely concentrate on 6x6 in Gepe slide holders with anti-Newtonian glass.
I almost forgot my engineering work: I use a Panasonic LX3 on a fairly regular basis for routine documentation of surface drainage and bridges. The LX3 weighs practically nothing, so if I'm hiking a fair distance, I'll leave the A7s at home, and take it.