Just a few words of caution about the 50K offer from the T&C
"If applicable, Chase cardmembers who currently have or have had a Chase credit card in any Rewards Program associated with this offer or have received a similar bonus offer, may not be eligible for a second Chase credit card in the same Rewards Program, or for any bonus offer. Chase cardmembers currently receiving promotional pricing, or Chase cardmembers with a history of only using their current or prior Chase card for promotional pricing offers, are not eligible for a second Chase credit card with promotional pricing."