I'd have to say Montreal is a great place to stop in. It's about 7 hours drive on the 401 from Toronto. There is a session here almost every day of the week. The ones I visit regularly are O'Reagans pub on Bishop, just south of Ste Catherines on Wednesday nights (beginners and social playing) and MacKibbins on Cresent, just north of Ste Catherines on Sunday nights (more irreverant material but excellent banjo and singing). I believe Hurley's pub and MacKibbins have Saturday sessions (I've not been but I gather more traditional whistle - fiddle music). If you need accomodation I'd be happy to put you up so long as you can cope with three dogs and a cat :-) Drop me a line.

Robin