My opinion for what it's worth - I live over 1000 miles south of you and live in a rural home that is supplemented by a woodstove. If you are heating primarily with wood, I think you ought to be looking at a 50 & 70 cc combination now and focused on the 70cc first with a short (18-20 inch) bar. I cut 4-6 cords a year of hardwoods, and although many saws can do that with relative ease - I prefer to use my 372 (20 or 24 inch bar for felling and bucking depending on the tree) and break out one of the 50cc saws for limbing and clean up when required. Reminder - I supplement with heat for relatively short winters of KS, not primarily heat with wood winters of BC.
Thanks. That is good info since I'm not yet sure what to expect. The softwood and occassional hardwood I'll be burning doesn't put out as much heat either. On the bright side, the house does have electric baseboards in most of the rooms. I just want to go into it using the electric as the supplement.
WHW: I realize I can get a bunch of good years out of a smaller inexpensive saw, its more a question of wanting to start off with some nice gear that I won't need to worry about (as much). The A/V and efficiency/output of a new saw would be good if I end up doing more cutting than I'm expecting. Definitely worth considering.