I'm going o be spending about $80CDN + tax (seriously, this silliness has got to stop) on a 1:25000 (1 inch = 4 miles) CD of Canada to assist with my journey planning for this summers TransCanada jaunt. I've looked at some screen shots that come with the CD and it seems to be up to Ordinance Survey standards. It's all geography and no tourist information, that's going to be gleaned from the MapArt provincial level maps and a copy of The Rough Guide to Canada.
I can't remember what the name of the CD is but I'll post it when I get round to picking it up in a week or two.