Thardy
Veteran
I lusted after an RB67 for a couple years, got one, and meh. Sold it back to its owner, who'd let it go for too cheap anyway and had seller's remorse.
Then I saw a Pentax 645 in a pawn shop. Wasn't terribly struck by it, but got it cheap...and now I love it.
I can see going to a Pentax 645 from an RB. At least you can carry it around.
I had the hots for an RZ kit because the lenses were much cheaper than for the Rollei 6008I I had. After using that behemoth (RZ) for awhile I pretty much gave up.