Moved to London which airline should I do mile runs with
I just moved from Philadelphia to London and looking for a good airline to mile run with. I'm Titanium/LT SE Marriott which got me Premier Silver with United and I have a 10 year multi-entry Chinese Visa, but is it really worth those China/United mileage runs from London? My work allows me to work anywhere in the world, so now i want to take advantage of it and see the world. Any advise? Thank you in advance.