Catamarans are becoming increasingly popular. Until a few years ago, catamarans had the image of being slow upwind and being "comfort containers".
Well that has changed since we have seen what foiling catamarans are capable of in the America's Cup! Still comfortable, modern cats have benefitted of the innovation in racing.  
Power cats benefit from better hull form, and thus lower fuel consumption. Also here, the enormous deck space a catamaran provides is very attractive. Sea Independent has a nice selection of sailing and power catamarans available.