Careful @geoffkait , I resemble that remark.
@mofojo since you are inclined to buy used, if you go with a very established brand with a long track record, you will have little risk and consider any purchase as a sort of long term home demo, because depreciation would be small. Stuff from Vandersteen, Magnepan or Wilson would all fall in that category.
Since you have the awesome JL sub and you are a rocker, that will help alleviate the problem that so many $5-$10k speakers have, which is that when forced to choose what compromises to make to stay in budget, is to sacrifice low end and/or dynamics. You've got that covered, so you will be ahead of the game no matter what you choose in that respect.
Anyway, if you appreciate the speed and dynamics of electrostatics, Maggie 3.7s are a good option. I've heard Maggies & subs before and while not the easiest to setup for good integration, it's do-able and worth the effort. Vandersteen, Audio Physic, Monitor Audio are other contenders that lean towards what you describe.
IMHO, Klipsch can play loud but lack the finesse of most of those suggested to you. Haven't heard the Tektons, but I would need to be convinced of the staying power of the company and the risk of them losing too much value if I decided to go in a different direction. Cheers,
Spencer