UPDATE: This promotion is over and the sign-up bonus has changed. You can find the best current offers here.
Right now the SPG American Express has the best sign-up offer I’ve ever seen. They’re offering 30,000 SPG points after spending $1,000 on the card within three months of membership. The previous best offer was 15,000 SPG points after your first purchase and another 15,000 points after spending $15,000 in the first six months of membership. Obviously the spending requirement here is much easier to achieve.
This really is an incredible offer. SPG points are probbly the most valuable points currency (as I outlined the other day), as they have dozens of airline transfer partners and can be converted at what’s essentially a 1:1.25 ratio.
So if you don’t have the SPG American Express, this is the time to sign up!