Thanks for the replies

MDtR-Chicago - I forgot to state that (good point). My goal is to bank miles with both airlines not only for commuter flights but also 12hr emergency flight(s) (example: elderly parent/in-law events). My choice of airlines is based on cost (Yapta) and I'm buying flights in May 2013 ($150-$200). I'd like to build a reserve of ?0K miles and then anything above that use for my RIC-BOS-RIC inbound/outbound flights.

Is this a good strategy? Is there another strategy other then churning?

The Capital One Venture Card is what I see on the TV commercial and maybe the reason for this thread. I need to check out Barclays Priceline card. Miles need to be transferrable to B6 and/or US Air becasue they offer direct flights from RIC (United through EWR is always an awful experience)