Unfortunately, all we online here can tell you is our own personal experience. Nice to know, but not unbiased. Probably the best thing to do is go to a pro shop and rent them both for a day - see how they behave in your hands in real (i.e. non-store) conditions.
The are both fine, excellent tools with great accessories. You won't go wrong with either.
I also went from my trusty Minolta 800si to digital (I chose D100). It was sad to let the old guy go, sigh. But within a week, I wasn't looking back (note, that since I have done tons of digital photography, I had no learning curve. Results may vary). The Nikon AF-S lenses are smooth, fast, and q u i e t ! They make my old Minolta lenses sound like old cars shifting into reverse.
A thought about lenses. Many people talk about which company has more or better lenses, etc. In my work, there are only a few lenses that I will ever need. So, as long as the brand has those, I am set. (And luckily, the lenses I need aren't too exotic.)
A thought about low-light: whichever camera you buy, you'll get a benefit from shooting raw files. I am always amazed at the amount of data hidden in my raw files -- they give you the ability to boost the exposure in postprocessing, something which has saved many badly lit shots.