Just because the drivers are the same size doesn't mean speakers are similarly good.

I'd also suggest a sub big enough to matter. Given the description of the room, I just don't think anything less than an EP350 is going to be very satisfying. Other brands (or used?) might be good options if that model doesn't fit the budget or you can't wait to increase the budget. I can never keep track of Canadian availability/pricing for brands like SVS and Hsu.

bibere usque ad hilaritatem