I have read all of the posts in this thread.
I am flying SFO-MUC round trip next year. My employer will pay for premium economy. I can upgrade to Business for 30,000 M&M miles each way, and I have enough miles.
If anyone has flown LH long haul in both PE and New Business, I would be interested in your opinion if it is worth it to use 30,000 miles each way to upgrade.
Thank you.