@fenrir,Sigfried
To add to this, the new delve gear (Qaaxo, Xaddi and Artisieq) require twice as many airlixirs as the RP are halved. Airlixir = 5 RP. Airlixir +1 = 25 RP. Airlixir +2 = 1000 RP.
You'll generally find Airlixir +2s to be cheaper than buying 1980 RP worth of +1s, so splitting up your last 1980 points by buying +1s and NQs would actually cost more.