apple = student discount + $100 app store (itunes, etc.) card
bestbuy = on sale (same or better) + $100 (general) gift card
many online retailers = no tax
... but, no tax week is coming up too.
... some configs only available from Apple (or select retailers); Best Buy carries no BTO options, for example.
... the best buy gift card deal is unadvertised. you have to ask for it. there are articles on this online you should look up, including here on MR. have these ready as back up.
🙂