I have a trip to Europe in the summer on DL (JFK-CDG-LHR-JFK) for 4 in Economy. Last year I did JFK-HKG-SIN on Cathay Pacific in economy (using BA miles). Seems like coach is easier than business class in my experience. Similar searches for business only showed 1 or 2 business class tickets.
I also didn't have that many miles to burn for business class.