I would use the miles for 2 RT tix in US/CAN rather than 1 to Europe, you stated earlier travel to/from europe is done (i assume you meant you've already done that and it's not at the top of your want-to-do list). Taxes and fees will be higher for the two tix vs one int'l- but you will allow yourself two Round-trips rather than one or take along a friend/compainion for free.
If I understand your question correctly for the "best" way to redeem miles: many people suggest using them for upgrades
[This message has been edited by ASCJSTEP (edited 02-18-2001).]