amehta wrote:
I don't think your usage negates Gene's suggestion, if anything it supports it entirely, since you mostly use exactly the "quality FX lenses" he recommends. His point, which I completely agree with, is if you are only going to use the 28-300mm lens, then don't bother with the D610, and stick with either the D5200 the OP already has, or get the D7100 and spend the extra $2k on some really good lenses to use with it.
Or get the 28-300, but use it on a 12mp D700, where it is sorta ok. The 24 and 36mp cameras just exacerbate the lens' flaws, as well as make a good lens look even better. I liked my 600mm F4 on my D300, more so on my D700, and now I am in love . . . :)