“I don't like "mixed" DX/FX systems for that very reason: you end up duplicating ecosystems (lenses in particular, but often other things like chargers, batteries, remotes, and so on).”
That is where I found myself with lenses (14) literally coming out of my ears. There were lenses that I took out because I had not used in moths or even one year. I had no idea if they were going to work or not. The problem is that it was usually a $200 DX lens. However, by using that lens I was not using a $1,200 one, for example. Why did I buy the latter to use the $200, instead? It did not make any sense. Therefore, I came in with an ax to reduce the number of lenses and that is why I was thinking of going only FX (D700) and not because I consider DX inferior. Most of my lenses were FX already. My new X1 comes with an APS-C sensor and I paid $2,000 for it.
Now to the D7000. When I pre-ordered the D7K, I took a big gamble by selling the DX lenses, except one (16-85,) and the D5000 not knowing that it was going to work out. Therefore, I had Plans “A-E” in place. “E” being the doomsday one, if everything planned went wrong (the purchase of the D3100.)
I never liked the photos taken by Chase Jarvis; there were something wrong with them, like they were “mushy” (I did not use that term at the time.) Mind you that this is the pro hired by Nikon to promote the D7K and not just any pro. When the review was posted, it addressed exactly my area of concern. Therefore, I started to look into “Plan B.” When I opened the box of Plan B, which had the X1 in it, the proverbial “Jack-in-the-Box” jumped out and could not put it back. Everything after that took a life of its own.
People might conclude that I went for the X1 because I thought that the D7K was not good. It had nothing to do with the camera, because I had time. It had everything to do with the X1. I could have even waited to get D7000 and evaluate it myself. If I did not like it, I would have returned it and then go to “Plan B.”