the Les Paul and SG are just FANTASTIC guitars.
The LEs Paul is a classic guitar with a classic combination of woods that work incredibly well together to give a very balanced, and thick tone that simply can't be gotten out of anything else. Yes it's bulky and uncomfortable and it only has 22 frets, but play one for any amount of time and it doesn't matter because it's quite clearly the hammer of the gods.
The SG oozes cool. It's great for those who find the LP just TOO big to handle. They're usually a bit lighter, and they're far more comfortable to play due to the slender shape. The lack of maple top on this model means that it's slightly darker than a les paul, making up for any lack of wood in comparison with a thick, earthy tone. It's very much a less-is-more guitar.
In fact; the less-is-more philosophy is probably what makes these guitars stand out from the rest. There's no tremolo to fiddle with, no coil taps, no locking tuners, nuts. It's a very simply, reliable, musician-friendly format that makes you want to play!