Hello mtkagan and aligg, welcome
if you guys can swing it financially on the elite models, go for it. if I can get a elite, I would have. but my original budget was for a 5020! lol, so I overspent to get better PQ and 10" of screen real estate.
I don't think you guys should count on the software being hacked, or made to public. I think that is the approach you guys should take. if you have a lot of ambient lights, I would suggest you get the elite, but if the lighting condition is somewhat controlled, 500/600m represent a great value. and all of us who are owners love our set. I can say for me, that despite not having ISF, I am still very, very satisfied with this monitor, and I think the rest of the owners would tend to agree. Good luck in your pursuit!