A TLR is quiet, easier to hand hold (you can cradle it with both hands, allowing you to easily break the 1/focal length rule for shutter speeds), and the lenses in the best are at least equal to anything you can buy, for any money, to fit a 'Blad.

Even better, you can get high quality used TLRs with decades of life left in them for less than a single lens for a MF SLR. Sure, you're limited (with most of them) to a single focal length (unless you spring for a Mamiya C series), but I don't find that to be as limiting as it seems; 99% of the time I use the 50 mm lens on my Spotmatic...