I've been reviewing the boards for all of the (great) information posted here, but would like to get expert's opinion before I pull the trigger. I'll be flying EWR-SIN on SQ 3-4 times in the next six months, and need to pick a program to earn points in. Here's my situation:

- Would like to maximize miles, not status, as I'll be flying business on SQ exclusively. Miles will likely be used for *A tickets or upgrades
- US and UA miles don't help me much, as due to corporate rates and my home airport, I rarely if ever fly them. I have Gold status on CO, which is my primary airline for domestic travel
- Signed up for KrisFlyer, but looks like LH and BD have better status and class bonuses, and I can double dip to get PPS status on SQ anyway

I'm leaning towards BD (I can sign up with a UK address if necessary), but I've read that some prefer LH for earn on SQ. Anyone have any suggestions or guidance?

Thanks.