I was reading a thread where someone had gotten 100K sign-up bonus targeted offer on the AmEx Platinum, but wanted the Schwab Platinum card instead at 60k for the 1.25x multiplier. One response suggested getting the regular platinum instead and waiting a year for the Schwab platinum. (Is it the case that if you get the Schwab platinum 60K sign-up bonus, that you can't get the regular platinum 75k sign-up bonus?) .

I'm in a similar spot; I have MR's I (eventually) want to convert for cash. I have never had an AmEx platinum card before, but I have MRs from having the AmEx Business Gold cards.

What order should I get these cards in, should I get both the Platinum personal and Business (are there significant differences) and Schwab? The one I definitely want at some point is the Schwab, and not exactly sure of the differences between the three though I have done some research. Also, any advice on what a good sign-up bonus amount for the AmEx Platinums? (I've read there's $200 in credits for Schwab card sometimes offered but not sure when).