Check out Swedespeed to learn more about the car and if you have questions.
The 6 cylinder one is the Polestar to have. It's super special and despite being mated to the 6 speed auto, it still hauls for a Volvo wagon. I remember when I sat in it as a passenger with 4 other friends. The 5 of us must have added an extra 800lbs to the car and the car still ripped outside Honda HQ in Markham. Launched like hell with winter tires on. The ride is great and it's a really special car. Only downside is the fuel economy but that is to be expected from a performance car. If you want something more comfortable, look into the Volvo V60 T5 with the 5 cylinder. I would advise against the 4 cylinder engines as they are nowhere near as refined as the 5 cylinder. They are supposed to provide improved fuel economy though and the 8 speed auto is an Aisin unit shared with Toyota and Lexus. However as a first year engine, wouldn't be surprised if there were lots of kinks to iron out.
For what it's worth, a new Volvo V60 Recharge starts at $60k before the $5k federal rebate. It has 462HP and is a PHEV so it should let you commute around Toronto fairly well in EV mode. The interior is definitely a lot nicer in every way compared to the V60 Polestar and is very well equipped already.