Ink Bold from Chase with 50,000 points for spending $5000 within 3 months, fee waived the first year. These points are combinable with the points from Chase Sapphire — so transferrable to United/Continental, Marriott, British Airways, Priority Club, Hyatt, etc.
50,000 American Airlines miles for a Visa, American Express, or Small Business Visa. There’s no fee the first year and a $150 statement credit after your first American Airlines purchase on the card.
40,000 US Airways miles for their Barclay’s Mastercard and no fee the first year. It’s under 50,000 points, but it comes from a secondary issuer, you’re not burning your application potential with Chase, American Express, or Citibank to get this one. (Though it does of course count as a hard pull to your credit and will be visible to issuers checking your chredit in the same system that Barclay’s pulls out of for applicants in your state.)