Vancouver is big, but more spread out. The downtown core isn't huge. It's in the Fraser Valley so it's beautiful pretty much no matter were you are. You have these bit mountains in the north and east. Not quite as multicultural, it's predominantly white/Asian(/Indian). I live in Delta which is a 35 minute drive from downtown with no traffic or closer to an hour wirh traffic. There is lots to do, especially if you like the outdoors.
Weather is pretty drastically different. TO has hot hot summers and cold cold winters. Expect a bit of snow but mostly it's just freaking cold. However, it's typically still nice sunny blue skies in the winter. Vancouvers winters are much more mild; we didn't get any snow last year where I live. It will get close to 0, but we play outdoor soccer year round so it's certainly bearable. Winters can feel long when it's just grey skies and rain though; part of living in a valley. Summer's are beautiful, hot and humid. Luckily there's no shortage is beaches and lakes to go cool down in.
Looking for anything in specific or does that help?
In addition, I think Bay area real-estate is a far better deal than TO or YYZ real-estate. The key reason is that you can get a 20-30 year fixed mortgage in the US while you will you only get a 5 year in Canada. The -average- detached house in Toronto is 1.2 million bucks. Absolutely out of whack with incomes. In the Bay area, prices are high but so are incomes.
I agree Bay area real-estate is better and so are the incomes high, but I think I will save on child-care and stuff as both me & my wife's parents can baby-sit and even though how much I like to live in Bay Area, the current immigration system is making me cringe as neither her nor my parents can stay here for more than 6 months, whereas the super-visa in Canada can help us start our family more easily.