Out of the 2 brands I'd have to say that the Surtees is my pick, they are slightly larger in size compared to Barcrusher and better looking cabin shapes. The Barcrusher however i think is finished off better with full paint option instead of that Nyalic clear which is hard work keeping clean, especially after fuel spills or sunscreen finger prints....Easily stains and chips.
The back up service for these brands often comes from their dealers instead of the builder directly. If you're looking at a Surtees in Qld I highly recommend Northside Marine as I believe they are Australia's biggest Surtees dealer and have a good relationship with the Surtees crew.
Cheers Dave