Last I knew, Apple loans were through Bank of America. And someone on another site once reported that you either pass their credit requirement, or you don't. There was supposedly no alternative financing rates. I've never financed anything through Apple so I could be wrong?
Apple's financing is through Barclays Bank and is called the Juniper Visa card. When I bought my MacBook Pro, they were offering free financing for 6 months and a $25 iTunes gift card if you financed. Although I had the cash, I couldn't resist the $25 gift card. I forget how the points worked, but since I spent $1270, I automatically got the gift card (I think $1250 was the magical number as I recall).
So, I did everything online, paid half the balance as soon as I received my first statement, waited until the gift card showed up and then paid off the rest and immediately closed the account. My wife and I only keep one credit card between the two of us (don't like having open credit lines for security reasons, plus it keeps your credit score high). All in all, the customer service for the credit card company wasn't too bad. It took about 3 months to receive my gift card. I had to call about 3 times (twice to check on the status of the gift card and once to close the account) - and had to wait more than 10 minutes each time to speak to a rep. They do have fee-free online payment and statements, which is awesome.
The moral of this story is that the financing isn't too bad as long as you are able to get it paid off in short order (i.e. before the interest kicks in - which I believe was something like 24% APR). You probably won't qualify for the financing if you have no credit whatsoever, I would recommend you start off smaller. There's a lot of credit card companies that specialize in starting your credit record off. They're usually high interest, so I recommend buying a few small price tag items, and routinely pay the card off before you accrue too much interest. Of course, it's easy to dig yourself into a hole with credit, so don't buy anything that you can't afford to pay off quickly with your existing income. And of course, if you don't have a steady income, wait until you do before you get started.