Title says most of it. I just registered the card and looked at the rewards website. The principal reward mode seems to be $75 cash into your brokerage account for each $5k you spend, but they also offer travel rewards. Skimming the airline reward options, it looks like they are basically pricing it by finding the retail fare and charging you 100 miles for every dollar of retail (AMEX has a similar "buy any ticket" feature, and I rarely find it attractive).

Should I just take the cash, or are any of the non-cash alternatives even more attractive/gameable?