I prefer the Nikon SB-600, which is smaller, lighter, more powerful and easier to use, but if you want a complex flash that even lets you update its firmware, and don't want to pay for the SB-900, voilà, here's your new flash.
Key Features
LCD and layout of controls designed for easy and intuitive operation
Multi-step auto zoom covers wide 24-120 mm zoom range
Three illumination patterns–standard, center-weighted and even–available to match every shooting environment
Automatically detects Nikon FX and Nikon DX formats and selects suitable light distribution angle
Short recycling time
AF-assist illumination for multi-point AF, with wide 24-135 mm focal range
Quick wireless control mode allows control of remote flash unit groups A and B flash output level ratios
Firmware updates via Nikon digital SLR cameras
Automatically delays recycling time if temperature of flash head rises in order to avoid deterioration of flash head
Automatically detects type of hard-type color compensation filter (fluorescent and incandescent) and automatically transmits filter information to camera for optimum white balance setting
Optional Water Guards WG-AS1 (for D3 series), WG-AS2 (for D300 series) and WG-AS3 (for D700) protect camera's accessory shoe contact when SB-700 is mounted on a Nikon digital SLR camera.
