i am working on the assumption that i have both.
i will want the fastest lenses i can get with the FX, because when its coupled with its High ISO capability, it can make for pretty amazing work.
70-200 on DX, i am mostly using 200 for sports. on DX, thats 300mm FOV on FX. and i still do not find it close enough. with a 400mm on FX, it might be close enough for me. 500mm, maybe not. i fancy that f/2.8 more.
no sense getting exact same setups when u have both DX and FX right? that will frankly not make sense to me. i am juz a hobbist. enough to clear the air for my decision, sir?
Sure but then you are not answering the question, because you are choosing 6 lenses to work in tandem. The OP wants 3. If you list 3 for DX and 3 for FX then you could be answering the question if you interpret the original question as 3 each.
But on your basis you're selecting 6 to work in tandem.