If you never intend to go digital with it, go for an orphaned system (e.g.) no upgrade path to digital back.
Might want to look at the Pentax 645N or NII. Built-in matrix, spot and center-weighted metering. Large number of lenses covering a wide range, many of them stellar performers and most of them now relatively cheap. Personally, I don't give a rat's behind for AF, but ED glass is available if you want. Yet the older manual focus lenses in that line are fully compatible with the matrix and spot metering of the later AF bodies. The older lenses also have exquisite all-metal build quality, on par with anything available, buttery helixes that are a joy to use. Too, lenses for their 6x7 system work on the 645 bodies with the Pentax adapter, in full automation. Film inserts are cheap and extremely quick to swap out in the field, though there's no mid-roll film changing.
Only real negative I've encountered with the 645N/NII series is that to get faster than 1/60th flash synch, you need one of their leaf-shuttered lenses.
Extremely well damped mirror in the 645N means you won't need the 645NII just for it's mirror lockup for tack-sharp results, this is an ergonomic camera that's eminently handholdable at slow speeds.
Look at the original price tag, and then to compare it with other systems-- add up the incremental costs of the metered finders, motor winders, grips, backs, proprietary batteries (P645N likes 6AA NiMH just fine) and the value of a $350-400 P645N in Ex+ or Mint- becomes obvious. This stuff is going for 10 to 15 cents to the dollar on fleabay.