Hm, just found this thread. Is there anything interesting left if one already uses the Schwab 2% card and SPG AMEX? It seems like the only benefit is the PremierPass membership, but at a cost of $500 (M+ earns 1% while Schwab earns 2%. To hit the 50k level, one would be giving up $500 in cash otherwise earned by Schwab).

Seems like a lot to pay for a bunch of lounge visits.