Currently in the YYZ Signature Suite and the team running the bar are absolutely exemplary.
The cocktails they’re serving are amazing and I keep having to remind myself that this is *only* a Business Class lounge - the combination of bar team and lounge ambiance is beating the pants of many of the First Class lounges I have visited, including the JL HND and NRT lounges, CX Wing and Pier in HKG, QF LAX and MEL lounges (but not quite the SYD lounge owing to the design), LH First Class Terminal in FRA and the LX E Gates lounge.
Despite having a bit of a nightmare dealing with AC on the phone, the Signature Suite has absolutely reminded me why I fly AC back to Europe.