Backpacking: My system is not too versatile, other than having several different bags at home.

Slumberjack Everest: I've had this for 17 years. It's a 3-season bag, but a bit hot in the summer unless I leave it completely unzipped. In the winter months I augment it by slipping another bag inside - a cheap fleece-type sleeping bag or my newer lightweight bag below.

???: I've got a light weight, very compressible bag that I picked up on sale this summer. Definitely a summer-bag only, but it's light and small. Can't remember the make or model right now.

Cabela's Adam and Eve Bag: For car camping with the family. Makes snuggling with the wife so much easier.

BOB: Adventure Medical Kits Thermo-Lite 2.0 Bivvies for each member of the family. (I have smaller children, so not everyone is ready to lug a bag around, so the BOB has to fit in two bags - one for a parent and one for the oldest child). Perhaps as the children get older and can carry more we will add heavier duty bags).

As far as pads go, for years I just used the cheep closed cell foam pads. The last few years I decided I'm getting softer. I now have (in addition to the old foam pads) a Therm-a-rest ProLite 4, as well as a Cabela's pad of similar construction. For car camping I take a queen size air mattress (for the Adam and Eve bag). For long term camping with the Scouts I take a Cabela's cot.