That's interesting. I passed on bidding for one with the standard and wide lens. With a bit of a look, SLRs go for the same prices of TLRs circa 200€ at the expense of being hogs.
Budget unlimited I'd lean towards the GF670 or Mamiya 7

An option not mentioned are the Fuji 645's. There was a Folder (GS645) but it was riddled with issues. There's the fixed lens with cowbar GS645s, which seems to be well balanced; and the AF P&S GA645 series that you can count as folding given the collapsing lens. The latter are supposed to be excellent although a P&S approach might not be the best for the first medium format. 645 seems a nice economic format.
BTW, as of TLRs, most seem to sit between 800-1200g. Knob wind cameras like the Rolleicords are the lightest, and Rolleiflexes 2.8 are on the heavy end of the scale. Mamiyas are a whole different class.