sorry HPN-HRL, RobDBA - context would indeed be useful; I'm based out of DUB, have been lucky enough to use BMI C&M to visit SIN,CPH,MNL,AKL,SYD,SFO,LAX,BGI,HKG,etc over the years, so no particular single type of holiday.
Thanks Raffles, price123, nice suggestions - I've not yet managed South America or Africa with BMI miles and had a desire to go that way, but Asia is appealing in terms of value.