Hmm.
Well... a good place to start is the Gibson and Epiphone home page, followed by the various online forums, but please take those foreign reviews with a pinch of salt... exaggeration is a fault with some folks.
Common misnomer: "built like a tank!!!" :lol:
Anyways, LPs come in so many variations.. but most of them revolve around the standard set-neck, twin-humbucker, tune-o-matic (or variant-thereof) bridge and 3-a-side headstock model which we all love.
I would also second Subversion's vote for the SG not just because I own a G-400 myself) but bearing in mind how many of rock's finest have utilised it to great effect: Frank Zappa, Angus Young, Pete Townshend, Jimi Hendrix (for only a while though).
The down-side of LPs is that they're in general very heavy (with the exception of one Gibson '59 Lp reissue that I tasted so long ago), and that's where the SG surpasses the LP. You wouldn't want to break your back eh?
Like I mentioned before.. go around and try them out. However, like those who mentioned previosuly.. the Yamahas ain't too bad either. I personally have my eye on that new white model sitting pretty in Music Plaza's window.
hope this helps.