Ok, so we all know for some AC doesn't make sense anymore, specially if you're below SE (and even that is questionable)... so here's my flight pattern, I am now E50... which FF program do you guys recommend me to switch to?

- Typical miles: 60K miles *A, 10-20K miles others
- Routes:
YVR-PHL: 4-5 times a year, typically via YYZ, Y
YVR-FRA: 2-3 times a year, Y class, occasional paid J
YVR-SIN: 1-2 times a year, Y class, occasional paid J
YVR-SFO: 2-3 times a year, Y class
YVR-SOUTH: 2-3 times, vacation, cheapest fares

Other travel could be for short vacations here or there, I don't travel within Canada for work, unless connecting to goto US or Europe. I've been on LH program in the past, and they were great in upgrading me on FRA routes, I'd say 50% of the time without even me asking, AND I could use my miles for upgrades (MM used for SIN-FRA flight last year). Biggest gripe is to get some upgrades on long-hauls as I am a 6'2 guy and Y class seats aren't made for me, specially on any route that's ROUGED!

Options:
(1) Stay on AC
(2) Move to LH
(3) United
(4) Switch alliance to OneWorld (AA or BA) as I have a ton of BA points via Avion card...

What do you guys things makes the most sense?