Nikon D3
This is a condensed review of the Nikon D3 provided by DPReviews.com. The full review can be found at the link provided.

Conclusion - Pros

Class-leading high ISO performance and incredibly versatile ISO 100-12,800 sensitivity range
Very good resolution and detail without looking over-processed
Better balanced noise reduction than most; more chroma NR, less luminance NR (film-like grain)
Incredibly fast (instant power-up, short shutter lag and short viewfinder black-out)
Superb continuous shooting capabilities buffering and card writing
Compatible with DX lenses with auto crop mode (only 5.1MP, however)
Excellent dynamic range and 14-bit RAW files offer huge amount of latitude
Large, bright viewfinder
True 'pro grade' construction, excellent ergonomics
Highly configurable Auto ISO function (can set maximum ISO and minimum shutter speed)
Conservative approach to image processing (slightly lower sharpening) helps to avoid 'digital' artifacts
Built-in chromatic aberration reduction is very effective (JPEG, RAWs through NX)
Improved 51 point auto-focus elivers fast and accurate AF lock even in low light
Auto-focus fine-tuning by body or per lens
Nikon's excellent 1005 pixel RGB metering sensor
Numerous 'hidden' designed-in features; AF tracking by color, scene recognition system
300,000 exposure shutter life
Now Nikon standard range of image parameter presets, addition of brightness adjustment
Superb large, high resolution LCD (delivers full-color VGA; 640xRGB x 480)
Live view with up to 1:1 pixel view, contrast detect AF as well as passive (mirror flip) AF
HDMI video output (up to 1080i)
Dual CF card slots, highly configurable
Compact Flash UDMA support, very fast throughput overall
Menu system is a pleasure to use, attractive and logical (though 'feature creep' means they're too long and there's too many) and built-in help
Clever features from built in tilt sensor to help system, Active D-Lighting, Overlay, Multiple exposures an intervalometer
Easy to use playback with very logical delete system (press delete button twice)
Highly configurable via custom functions
Probably the best battery information display in the business (% charge, shots, aging)
Wide range of custom settings
Optional wireless WiFi transmitter (802.11 b/g)


Conclusion - Cons

No timed mirror lock-up function (could be automatic with self-timer)
Focus points somewhat concentrated in the center of the frame
Metering struggles to keep up if you shoot at the very fastest continuous rate (i.e. in manual focus mode at 9fps or 11fps in DX mode).
Slightly washed-out flash exposures at short distances (tested with SB-600)
No in-camera dust removal system