Hi, yes I have flown them many times on their a320, a321, Boeing 777 internationally and domestically. My last flights were in January 2017 in J and I find them very accommodating but unfortunately there is no IFE in their A320 & A321. If it's the service your after I find them better than QF ,BA in J. But SQ is the best for me so far.
Their lounges are pretty good too.