QF F SYD and MEL (not LAX) - Very good service, excellent food. Depending on the time of your flight MEL can be almost empty
CX F The Pier HKG, LHR - I've found the food better at LHR but otherwise The Pier is just amazing
MH F LHR - in T4, really good when flying MX or QR (if times match) in Y.
LA SCL - that was a surprise, LA has no domestic lounges in Chile, so they've spent all the money in one place.