Board Thread:General Discussion/@comment-6644750-20180205103658/@comment-1222445-20180207011235

Generally, HARD9 could give you the most points and EXP. Omen is particularly popular for idlers, and getting lots of kills would give you a maxed out 9999 EXP and points. It may not seem much but the rest of the amounts are based on the additional point multipliers.

https://imgur.com/a/XNSFr <- Check out the BONUS+ window at the lower left corner, and then observe the point count. I'm at the topmost of the list and this is before I have the transcendence weapons yet.

Alternately, you can try and scrounge up as many Lv3 EXP Coupons as possible from completing HARD9 once daily (Double Gates is very easy to do with coordinated teams), and when you have enough, use all of them at once.