well built but was pretty much of a bust in terms of
performance (in most conditions, it didn't sail faster than a
well-sailed non-"First" series "cruising" oriented B331, its closest
B-made boat in terms of size, etc.),


A first 33.7 will sail circles around any Oceanus 331 across the board.
Check the specs, read the ratings and check with owners. They are
vastly different performing boats.

RB
35s5
NY