Aside from being in my own backyard, I would prefer to keep the APUG conference where it is provided Bob and John are up to it for essentially the reasons outlined previously
1) organization, as a volunteer, I saw the pressure Bob and John are under to make it a first class event, believe this was a first class job and I was honoured to volunteer with this conference. To be held anywhere else, you have to have a first class team in place who can deliver.
2) Location, ok I am biased, Toronto is centrally located and an airline hub so it is reasonably easy to get to from most places in North America and Western Europe. With the European APUG membership, are there any charter carriers that fly to North America cheap? Or book further ahead. We also had access to the best lab complex in town if not the province of Ontario, it was also blessed with gallery space, and boardrooms which help with workshops. Plus as Robert Teague pointed out, the quality of light here is first rate for shooting and tons of material for shooting in and around town.
3)The quality of the team of organizers and volunteers was first rate. The really big if Bob and John want to do this again, I would be happy to volunteer again. I really enjoyed showing fellow APUGer's around town and being part of making this all happen.