TLR or SLR
I have a Mamiya 6 and TLR gear. The M6 is a great travel camera, with great glass, especially the 50mm wide. I worry about getting parts for the winder if it should break, as that seems to be its weakest link, but I try to be gentle with it and so far, so good. The TLRs can be had, as has been suggested, for dirt cheap and are all over that auction site (I found a great deal there on a C330, and it really is built like a tank). The WLF is great for portraits of the kids, I find - corny bathtime example attached.