Sakura lounge (J lounge) was great when I was there earlier this week (flying NRT-DEL). Space is ample, though crowded, and has nice shower facilities - actually beats both UA and NH's shower facilities in T1, in my opinion.

There was a nice dinning section in the upper part of the lounge where I had breakfast.

I didn't even think to visit AC or CX lounge as I was quite happy with the selection and the ambiance of the Sakura lounge. Should I pay a visit to other OW lounges? Perhaps, yes... since I have lots of time to kill on my return flight, connecting to SYD.