its incredible, thats all i can really say right now. i was skeptical at first, but i bought that and strad - HOLY MOLY. you have noooooo idea. sounds totally real if you get good with it. expressive beyond belief. fun as a mothersticker to play. its just incredible - bottom line.
I noticed that the register button you press in the NI window in the K2 player doesn't work. If you look in the directory, the program installed into (probably C:\Program Files\Native Instruments\Kontakt 2 Player or something like that), there should be a service center installer there, which when you run it will probably ask to be updated and will download stuff automatically. You register from that program.
rick - i'm using a macbook pro which handles it pretty nicely, but yes it can cause problems. every once in a blue moon if i have gof and strad loaded, while having a few other big programs open at the same time Logic crashes. the biggest annoyance, however, is how effing long it takes to open a song file with the gof and strad loaded - its like 2 minutes just to open sometimes. oh well, i guess thats the price you pay for having the best sounding stuff out there - so i can live with it.