Seriously check out the Passat TDi wagon. It's great!
You say you drive on the highway often. If so, diesel's great. If you're in E TO and am in the city often, maybe it's not for you. And if you're driving on city streets, won't heat all that fast in winter.
Otherwise it's a great car, and the upcoming Passat will be priced higher than the current one so it's really quite the deal while they're around.
And there's no more coming. So once they're gone, they're gone.
Mazda engines deliver relatively poor mileage for their engine size. The Mazda5 will over tonnes of room tho! Worth it for the price ($19,995 - $26), and a unique package.
As for dealers, I've dealt with Avante Mazda in the North, Westowne in the W, and Ajax in Ajax (ask for Greg). All were positive.
For VW, I'd recommend the APA rep there, VW Villa seems helpful in the North, and of course I'd have to plug my friend Erik @ Owasco in the east GTA.