Via a referral will get you 60K and many here will clamor for your referral so they get their 15K. But it's a mutually beneficial. You might even get PM's (I did)

I did a cross referral with my wife to get a total 75K.

Aeroplan will ding you big time for taxes and fuel surcharges. I have a booking, 3 in J YYZ to SYD one way, $1400-1500 in taxes. Aeroplan is a game you need to learn, and sometimes the hard way. That being said International J nets 4%/mile or more.