Not an expert at this by any means but I believe purchasing in the corporate name is harder then buying in your name and transferring. The difficulty lies within the financing aspect of it. If the financing is done with the corporation owning the home then the lender assumes liability in the event of the corporation defaulting on the loan and if the corp has no assets then the lender is s.o.l. I would imagine if you add some sort of personal gaurantee behind the corp then the lender would be more open to letting financing be done in the name of the corp.
Again, guys like surveyor and multipleprop are better suited to answer your question.
Without ever trying it my guess would be to buy in your name and transfer it into the llc after. Then repeat for each property with an assumption you will setup a corp per rental. That would maximize your liability.
