Do not hesitate to buy refurbished from Apple! I've bought an iMac, an Apple Cinema Display, three Thunderbolt Displays, a MacBook and very recently an iPad Mini 2. I've bought by fair share of new-in-box items as well and will tell you the following (as everyone here can probably echo) - there are TWO major differences between new and refurbished in the Apple hardware world:
1) The boxes are SLIGHTLY more plain for refurbs. Basic white, but the rest of the packaging is generally identical.
2) You don't get the instant gratification of buying it in-store.
Aside from that, it's almost silly NOT to buy refurbished. Remember, refurbished everything has gone through double-checks when compared to new products. While Apple warns you about minor cosmetic blemishes, I've NEVER had one in all of those items listed above. Every single item has been in pristine & new condition and worked 100% up to spec.
Apple Refurbished products are fantastic!