Re: Quality difference between ESP Standard Series and LTD 1000 Series.
There is definately a difference... Even if it's not in feel, but construction... As far as I know, most ESP Eclipse models have 22 frets and a thicker body, while the LTD EC-1000 models have 24 frets and a slimmer body (excluding the T/CTM model). As for the other styles, the ESP's have little to no gaudy abalone..
Of course, many say the difference is in the feel, so you should really try both to see which you prefer..
As for the $500 increase, I wish it was like that for me... the lowest price difference for similar models that i've seen around me (3 and a half hour drive just to get to the ESP store in question) is $1000 at least... So for me, the LTD line is pretty much my only option, other than the new LTD Elite if their prices are decent.
But, to re-cap... Are they worth the price hike? Only one answer... Play them both and find out. B2D made some good points also.