Ken,
Thanks for the links. As everyone seems to say it depends on how you use the cards.
I guess people do have problems redeeming on AC, I'm sure that is the case but I pretty much get a seat whenever and wherever I need. There are tiems it takes a little bit of effort but overall its great.
Both RBCs and TDs cost more then 15k for a short-haul to the US, both require advance bookings and weekend stays which is why I can never use them.
Supposedly, this MBNA one has none of these restrictions so it'll be interesting to see if anything is hidden.
If its the same as Aergold without the problem of availability I'd suspect there would be lots of converts.
I'll post here when I receive more info in the mail