I have used a Big Agnes Seedhouse SL2 in the past (still have it) but I currently use a Big Agnes Flycreek UL1 and have since about 2011. The Seedhouse is adequate for 2 people, if a little cramped but the Flycreek is much better for one person, in my opinion. The smaller tent means that I lose less body heat just heating up the air in the tent so I sleep a little warmer. I also don't bring a lot of stuff into the tent when I sleep so I don't need a lot of room for extra stuff. The Seedhouse in Texas
IMGP1619 by
Stuart Black, on Flickr
and the Flycreek in North Carolina and Colorado
IMG_0037 by
Stuart Black, on Flickr
DSCN1257 by
Stuart Black, on Flickr
For a sleeping bag, I use either a Big Agnes Ranger which is a 20°F down bag or a Big Agnes 45°F Yampa (or something similar) down bag depending on where and when I'm touring. I've had to spend some very uncomfortable nights in the 45°F bag if I don't choose correctly. That bag is extremely uncomfortable at 22°F, especially when the wind is ripping off Lake Erie! It worked for a trip I did this week but it was a tad cold at 10,000 feet. On the other hand, the Ranger is just too hot for spring or summer in the eastern and southern US.
For a pad, I use a Big Agnes (seeing a tend here?

) Q-core inflatable pad. It integrates well with both bags and is thicker and lighter than most other pads I've used. It also pack smaller than most pads I've used. I've used a Big Agnes pillow...I told you there was a trend...in the past but picked up a
Sea-to-Summit Aeros Pillow recently that is significantly lighter and more comfortable.
For solo trips, the weight of the whole thing is around 4.5 lbs with the heavy bag and just under 3.5 with the lighter bag.