Ibanez Artists.
At least the "vintage" models. They started making reissues a few years ago and I haven't really got to compare the sound of the reissues to the originals. I know the reissues weigh much less than my "vintage" models.
I've got two of these puppies (both from the early 80s) and I cannot be happier-- and I didn't pay more than $400 for either of them. I don't even want a Les Paul since I got these guitars. Plus, I think the double cutaway looks cooler than the LP.
Solid mohagany body and very high build quality-- the factory shielding alone speaks to the quality (the internals are shielded VERY well). I'm not so sure I like the stock pickups, but I have replaced the pickups in every guitar I've owned so I guess I'm biased in that regard.
If you love the Les Paul tone and feel, you have to check out these guitars. There's about 15 of them on Ebay right now for less than $500.