Yeh Stu,
Have looked a lot at motors and spoken to a number of owners in person. Will probably go with Mercury Optimax at this stage, they seem to be getting slightly better economy than the etec and have a 5 year warranty.
Although it does appear that they are not quite as quiet but I can live with that as my old motor was a 24 y/o mariner 6 cylinder head banger, man that did make a bit of noise at WOT.
Dave