Good discussion and one I always have to deal with.

I have become wary of my SWUs - still sitting on one which expires in March.

I guess if it was me:
1 award of 2 SWUs from the 175,000 point level
1 30,000 mile reward from the 250,000 point level
1 $250 travel credit or gift of Gold status to two people from the 250,000 point level

Ive thought about the B&O headphones. My issue here is that 1) it requires two choices at the 250,000 point level, and 2) the retail value of them is about the same price as two $250 travel credits (Amazon has them on special for $397 so you actually are losing money versus the travel credits).