My friend just bought Canon T3i body only and he is looking for a lens. We decided Canon's 18-135mm would fit him as all purpose lens as a beginner.
Here is the lens we found... but it says 'White Box' item:
B&H Photo: Canon EF-S 18-135mm f/3.5-5.6 IS Lens (White Box)
Per advice from people in this site's photo chatroom, I can buy this, as the only difference is that it it comes in a white box, rather than the manufacturer's colorful box. (Thanks @fluf)
If I buy this white box item, will it be covered by all warranties like a normal non-white-box purchase? My friend is in the USA, so can he use the USA warranty with this?