Upgraded from D7000 to D600. WOW.

Your comment is what scares me. LOL

I'm guessing that upgrading from a D90, I'd see a pretty significant improvement in a lot of areas. :
) I'm mostly concerned with better High ISO and video. I'm also looking forward to having built in time lapse features.

Of course, the hangups for me are:

(1) I really enjoy my D90 and the 17-55 lens combo, and just am having a hard time parting with it

(2) I'm really curious what the next iteration high end DX is going to be, and want to know all my options before diving into a new body. Of course, by waiting, I'm giving up some serious deals on these D600 kits and instant savings on a 70-200VR2 and SB700 added to the mix.

(3) The old favorite - Money. Don't have a lot of it right now since my wife just had major surgery on Monday (hysterectomy and bladder surgery) and a $4,000 tummy tuck. LOL But I'm like, hey, we can spend $4K on an elective surgery for you, I'm spending $4k on some new camera gear!! So as soon as we get it, that next $4k is earmarked for something new for me! Haha.

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Nikon D90, Nikon 17-55 F2.8, Nikon 18-105, Nikon 35mm F1.8 - Sony NX5U - Adobe CS5 Production Premium