I own a 75 B layout Centaur since 2004 and reckon she,s a go any were I want to go boat, slow alright to windward but steady in the occasional bad conditions I,v encountered here on the South East coast of Ireland . I,m 5`11" and only bang my head on the bulkhead door opening, just too stupid to fit a rubber strip.

Doesn,t feel the weather as much as some I,v sailed on and her bilge keels let her sail more upright than a single keel boat. Wouldn,t fancy the Atlantic

but plenty have crossed it and some have gone a lot further.
The Centaur is solid and dependable. I sail single handed most of the time so having a well built boat with solid old style reliability is important for me. Theres currently three in harbour here over the winter so I,m not alone in thinking they are a good bet.
My longest cruise so far is about 120 nm south and it took me 2 weeks there and back, I enjoyed being on her and hope to go further this year.
The shallow draft is great and drying out on twin keels can be a great advantage if space is hard to find in a good harbor.
Check out the Westerly Owners Association for general info.
Common fault is Gel coat blisters and weeping along the keel joints caused by splaying of the keels. Both can be repaired at minimal cost if into DIY.
Its worth taking out the floor of the sink cupboard to check the keel bolts and for keel leakage.
Safe sailing