I'm having a little bit of a brain freeze here. Pretty much, it all boils down to me wanting a MF camera with a budget of ~$600USD. The kicker here is I want something small (debatable though, and I really need some comparison photos!) but lightness is the other consideration, because this is a camera I'll be using for a lot of trekking, including a trip to Nepal and Everest Base Camp in November. Originally I was sold on a Fuji GS670/690 rangefinder, but a lot of it's use will be landscape and people photos, and I know how frustrating rangefinders are with ND grads. Now weight. I'm young and fit but also stupid, so I can carry some weight without much hassle, but I also don't want something bulky that's going to take up a ton of room in my pack, plus it needs to be hand-holdable, though it will have tripod backup too. The other two options I've been thinking about are Pentax 645's (some of their auto features will be handy for speed) and Bronica SQAi's. I'm not entirely sure 6x45 is really worth the hassle of lugging all that extra bulk and the initial cost over 35mm, and I'm not quite sure how big the Bronica really is (any MF is rare enough to find here in NZ) and how easy it would be to handhold. Basically I'm just looking for some advice. Am I going to have to make some sacrifices (bulk vs. grad possibilities) or am I thinking there's more to MF SLR's than there really is? If possible, I'd absolutely love some comparison photos of of Fuji rangefinders, Pentax 645's and Bronica SQAi's next to something universal (35mm SLR? can of Coke? Be creative!) and maybe some weights as they're hard to find too. I think that's all. Thanks a ton in advance!