Hi Guys: I have some of each. Here is what I see.
Personal Name:
Advantage: If you keep them all in your personal name then you don't have extra accounting or the extra costs of having a company tax return to do each year. Also, it might be easier to finance a property as you can move into it and have it as your primary residence and put as little as 5% down payment.
Disadvantage: If you are sued for something to do with that property and it is not covered by your insurance then it can be on you personally.
Incorporation Name:
Advantage: Easier to pay on to your kids or sell to other people as you sell or bequeath the company and the properties go with it. So no taxes to pay at that time of transfer, the company simply continues on. Also, once you have a number of properties in a company you then have a portfolio that you can use for Commercial Financing which may allow you to refinance at a greater loan to value to pull out cash. Liability is limited to the company that owns the property. You may be able to buy cash flowing properties without so much dependence upon your personal income. This is part of commercial financing advantage.
Disadvantage: You may pay a higher rate for your financing because of it being a company. You may also have less options for insurance when in a company name - I noticed that more in the USA then in Canada.
I bought my personal home and my first 3 rentals in my personal name. Now, all new purchases are in my company. Mostly for the estate planning aspect of it.
Great Question and Best Wishes!