We grow our onions from seed. We're in Western Wisconsin, USA, about an hour east of Minneapolis/St Paul, MN. We've had consistently better luck with onions from seed than from sets, for one thing you can be more sure of the variety. We start them inside under lights in January or early February. We have reduced our number of varieties to 3 or 4, usually 2 storage types, a red, and a larger sweeter variety that doesn't store well. Garlic is down to 5 varieties, mostly ones that we got from friends or other trades over the last 30 years. We're cutting back on number of potato varieties, too, down to half a dozen or so, and at one point we grew over 20 varieties every year, many hard to find or rare. Moving to town has restricted our garden options a lot.