Hi

I live in Saskatchewan and have a short 5km commute to work mainly along a bike path. Until now I have only commuted from May to November before our harsh winters arrive. The paths and road here are generally packed with snow/ice during the winter months although snow fall amounts at a time aren't too bad, about 2 inches but it doesn't melt (www.currentresults.com/Weather/Canada/Saskatchewan/Places/saskatoon-snowfall-totals-snow-accumulation-averages.php)(I can't post urls yet). The paths and roads are cleared but potentially not by the time I leave in the morning. I bought a new bike this year so now have my old Trek 3700 to use as a winter bike. The bike currently has 26 2 inch tires. I am looking for advice on studded tires to buy for my circumstances. Our prices here are high and it is cheaper to buy in the uk. I have seen schwalbe marathon winter tires for about $50 each. Would these be good for my conditions and if not is there a better alternative. Also I'm unsure whether to get 1.75 or 2 inch. Any help would be greatly appreciated.

Thanks