I have been shooting my RB67 for the better part of 5 years now. I too love the 6x7 and never had an attachment to square format. Although heavy, I think the RB glass is great (I have the 50, 90 and 180)and the camera itself is very well built. I do cringe when I have to lug that and the prism finder around though, that sucker is pushing 7 lbs or so at that point.