Okay I have not seen or read on the newest editions, only knew about the Top Palladiums, so yes those could be pretty sweet for 8 k new.. However I would venture to say the RF83 is as good a speaker and cheaper, with better low end and efficiency
Bottom line the palladium holds probably one thing over the reference series in this case and that is a slightly higher grade crossover part, and the fact they are true 3 ways over a 2.5 way.. I can tell you this, go listen if you can, I think you will be very suprised for the money what the reference series offers, and again I don't think you will find many used pairs of palladiums in the next couple years anyway unless you order from somebody overseas
You could get a street price on the RF83 I am sure for 1700 to 2100 a pair brand new possibly, or floor demos.
Thats still the one thing klipsch has advantage of vs. most other recommendations you will get here, they will have pairs in stock somewhere that you can go and listen! Or even take home to demo and still get a killer price on them. Most of these other brands are more esoteric, custom and direct order or very few dealers, so its up to you to simply try what you can first.