B&H charges no tax and their Apple products are always cheaper. Free shipping as well. So which do you recommend I buy Apple products from? B&H accepts Paypal too.
If you want a standard configuration, buy from any authorized reseller. If you want pre-loaded software or any other upgraded feature at the time of purchase you're limited to the Apple online store.
I'd stick with Apple Store as well. The fact that I can return an item if something is wrong or exchange with higher/lower configuration without hassle is worth the extra money for me.