So then.....is it safer to go through httpS or is that irrelevent in the grand scheme of things?
It shouldn't matter because even if you go through the non-secure (http) address, once you get to the point of sending any sensitive information over the connection (actually, once you even log in), the paypal site will have automatically transferred you to their secure site (https).
This is the case with most online sites that ask for sensitive information (stores, banks, etc...). You start out using their normal site and then they will automatically link you to their secure site when they want to collect any sensitive information about you. For the most part, this transition is seamless and isn't noticable to the user.
But before you ever give out anything sensitive, you should check with your browse to make sure it is secure. Some sites don't use secure connections (SSL) for this type of thing, so don't just rely on the fact that all sites will use this technology.