There's a bonus for $100K in spend that I'll never ever reach, but the big difference between the Regular Plat and the MSSB plat I've used is the free additional cardholder. That in and of itself isn't that great, but in addition to the primary cardholder, the additional cardholder also gets the reimbursed GlobalEntry enrollment. So I was able to get my GlobalEntry fees reimbursed for both my girlfriend and me. ^