I would look at this from two ways. Firstly, from a US / Canada perspective. MBAs are known globally by brand, not country of origin. Therefore, it doesn't matter that LBS is in Europe and Stanford is in the US, they are both nationally known brands and, therefore, carry global prestige. At the moment, the reach of Canadian programs would be questionable outside of North America. Even then, within the US most people couldn't name a Canadian university to save their lives. It's also important to consider where you might go. The schools you have applied to and gotten into in the US - how are they ranked? Are they ranked highly? If you switch from a Canadian program to #29 you might not be improving your education all that much.
Secondly, from a part time and full time basis. Generally my recommendation to clients is that if you can afford it, pursue a full time program. It comes with its own set of challenges and financial considerations but you've already highlighted one of the potential issues with part time programs. Low interaction with your classmates, reduced extracurricular and leadership opportunities, and a off schedule / unstructured recruitment process if you're looking to find a new job.
If you could provide a little more information, I'd love to help you talk through this!
Managing Partner, Founder
Critical Square | MBA Admissions Services
Web | Blog | Free Resources | Facebook | Twitter
Sign up for a free consultation today!