I highly recommend this one. The large capacity is great, it allows the cup to double as a small pot (Use the single wall version!). It's durable, weighs almost nothing, and is quite versatile - I use mine to scoop granola, eat meals from, cook with, heat water for tea or cocoa, etc. I recommend the single wall version for a few reasons: You can use it over a stove or other open flame; It costs less; It weighs less; and if you use it while winter camping, you'll want the cup to warm your hands. Ever try drinking from a mug while wearing big mitts? Get the single wall one.

Also, for those camping with a buddy who doesn't drink as much as you do, the 450 ml cup fits nicely inside the 600 ml one.

I bought this bag for dog mushing trips in interior Alaska, where the temps really let you test out a bag's rating. This one does the trick! Of course, you do need to wear long underwear, hat, and warm socks, but you should anyway. It's just one more thing you can do to be nice to your expensive equipment.

This bag lofts like no other, it'll look like it's going to take over your tent when you pull it out of the stuff sack. The water resistant shell helps you out if you spill your coffee, but will work against you on longer trips. Perspiration has a little harder time working it's way out, so for this reason I recommend a vapor barrier liner for any trips more than maybe a week in length. I like Western Mountaineering's liner, but you'll have to find it somewhere else, as Backcountry.com doesn't have it, unfortunately. I also recommend getting a waterproof compression sack for it, I've been using Granite Gear's Drylite Rock Solid in a size Large. I really like it, it works much better than the stuff sack supplied with the sleeping bag. Find it here at:
http://www.backcountry.com/store/GRG0004/Granite-Gear-Drylite-Rock-Solid-Compression-Sack.html

I bought a long, even though I'm only 5'9". I like the extra room so I can put booties on my feet for when it's really cold, or for throwing my damp clothes at the bottom. Also, be prepared to fight this mammoth a little bit when stuffing. Not only is it huge, that shell that keeps your coffee out of the down also likes to limit how much air moves through it. So as you squish it down, it will tend to poof up like a balloon. You just have to keep at it, keep squishing. I've found that I'm able to stuff mine in about 2-4 minutes.