NI, Probably the first question is what do you want it to look like. Most new homes I've seen in SWO have no brick mold. If you are replacing only some windows you want them to look symetrical and trim them like the originals. Drive around and look at newer homes, then look at homes in your neighbourhood that have had windows changed.
I have seen some really ugly flashing and oversized molding used to butt against siding and stucco and then ... there are the pro jobs. Look around and get referrals. Good windows are a good value, get an energy audit done first and you'll get some provincial rebate money as well, but they will tell you that in our area windows are a lower priority for energy savings..than insulation whereas window sales guys will tell you they're great
There are over 1200 window manufacturers in Ontario alone.........
Where I live in Kitchener, we have several real manufacturers Golden Windows and Strassburger (vinyl),HD has several. Strassburger makes nice quality vinyl with virgin PVC which gives you a clean smooth finish.... good folks, but there is a lot of over priced crap out ther sold by hucksters with huge mark up and fast flying "discounts". Centennial has a rep for being very high priced, etc....buyer beware.n Shoot me a PM if you have questions