Originally Posted by iggyv
DENPremEx -- Don't know if you're a member of BA's Exec Club, but two R/T tix in FC on BA to London from North America "cost" 300K miles and run over $30K. Not a bad return for all those Marriott points!

This would indeed be an excellent use of 300,000 marriott points - Unfortunately 1 marriott point is not worth 1 BA mile.
I used my Excess MR points when I was in Prague. There is no SPG hotel in the Czech Rep and the Marriott is a nice new hotel.