I've tested the 28-300 here
and am very satisfied with its performance.
But that is surely not the single lens solution on a DX-body, as 28mm is just 42mm equivalent. That is certainly too long for many occasions so you definitely need a 18-55 or such-like for covering the short end.
Still it may not be such a bad suggestion - but for a single
zoom solution on a DX-body you should go for the 18-200 VR zoom.
You should only be aware that the 18-200 is pretty weak between 100 mm and 170 mm.
The alternative suggested by Citruspers is also a very good one, but you clearly have to change more often in the focal range of 28-55mm than with a 18-55+28-300 combo. And it might just turn out that this is a range you use quite a lot...
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews
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