Thanks for your reply. Things sound like they are moving along nicely for you, all the best for your application!Typically your VO is the primary applicants nearest VO. For example my VO is Sydney as I'm from NZ and I'm the primary applicant. There's multi posts about why some go to Mississauga and others go to your nearest VO. Some say due to workload at Mississauga they may take on more applications there instead of sending them to say the Sydney VO that may have a lot of applications to process and vise versa. I've found the process with Sydney to be pretty good so far. They have up to a year to process the application and I'm currently waiting for them to process my BGC and I applied in July.
In terms of faster than the other? More staff work at the VO in Mississauga than in Sydney but Sydney knows more about New Zealand and things are quicker to send to them such as documents and passports so its really just one of those "no better than the other"