Glock doesn't suggest reloaded ammo, but reloading is cheaper, and wolf ammo is fairly inexpensive commercially reloaded ammo.
There are other 9mm sizes, 9X18 and 9mm tokarev are russian sizes, usually its pretty easy to tell the difference when shopping as those other sizes are well marked. Yours will be marked 9X19, 9mm Nato, or 9mm Parabellum, often just as 9mm as well, but if you're not sure, ask the retailer.
As for the home defense question, as other users are suggesting, firearms are not permitted to be owned in Canada for self defense. There are various premium ammunition sources around that are available in more accurate and higher muzzle velocity loads, often these are designed with a projectile that will expand on contact with a liquid or solid target to prevent over penetration. This is a safety feature to keep your round from possibly penetrating a wall while you are target shooting at the range. Speer Gold Dot is an example, and several other brands have been suggested here. The Hornady Zombie ammo has cool packaging, but good luck getting any lol. Hornady TAP is also supposed to be good.
Remember, when anyone asks, your handgun is owned only for target shooting. If it is ever used in self defense, you can almost guarantee that you will be charged, and quite possibly go to jail for it. Do yourself a favour, a sporting implement such as a baseball bat stored in a location where you can quickly access it when you are in a hurry to attend a sporting event is a weapon of opportunity that is less likely to land you in jail if you ever need to defend yourself. In the end, consult a lawyer before considering self defense options, Canada is not friendly to self defense in most cases.
