..coming over to the dark side
Never yet found a single thing about my D3 that I don't like, and not yet been able to come up with a single reason why I would need another camera.
The megapixel count is a huge non-issue, designed to sell cameras to people who like simple numbers to decide how good a camera is. I know quite a few people who shoot with 5D2s, but very few of them who ever print bigger than 60cm, so there is absolutely no point in having all those pixels. It's like the guy who buys a car that goes 180mph but never ever has the opportunity to drive it above 70mph.
The ability to crop more out of an image is also a non issue. Buy a longer telephoto and learn to compose better.
I shoot landscapes and sell prints...and I've never had a problem with a lack of resolution. I've actually printed to above a meter before, and the image looks great. The files seem to uprez really well. Here's a 100% crop of a shot taken with the 80-400VR at 1/125 handheld at 400mm which has been uprezzed to 33mp
http://andymumford.deviantart.com/gallery/#/d1qez8o
If you're put off by the price of lenses, have a look at second hand older lenses. I use an old 80-200 f2.8 instead of the newer 70-200f2.8VR for weddings. OK, I don't have VR, but optically the lens is excellent, and it only cost me $300!
You might also want to look at Capture NX2 and View NX. Compared with Lightroom, it's slow, un-intuitive and buggy BUT I'll put up with all that because it converts NEF files so much better than anything else out there, and the ability to use Nik control points, and Color Efex Pro directly onto the RAW file (without converting to a PSD or TIFF) in localised areas makes up for the...uhm...idiosyncrasies of the software.
I'm pondering the D4, but as I'm happy with the D3, I'll more than likely wait for the D4S. It's nothing todo with rumour, Nikon (like Canon) has a very solid, very predictable release timetable for it's flagship models.
D1 June 99
D2h (first "2" series camera) July 03
D3 August 07
That's 4 years between each series (same time cycle as Canon's, but Canon's series 4 is generally 18 months infront) with the "S" upgrades pretty much right in the middle of the cycle. Summer 2011 will be 4 years from the D3, 2 years from the D3s, and is pretty much a certainty for the D4 around July, August.
As for it's specs...well, THAT'S speculation
Good luck with the change, you absolutely won't regret it.
As for me, haven't posted anything here recently. Been busy with lots of projects but I do drop by and there are constantly some wonderful images being submitted here. I particularly liked some athletic shots of yours a couple of months back Mike, I just didn't have time to comment.
I heard a couple of weeks ago that I've had a shot short-listed for Landscape Photographer of the Year award in the UK. I have zero expectation of winning, pretty much every pro in the UK enters (the first prize is £10 000) but it's nice to have made the shortlist.