Personally I would buy Nikon, first I would wait for the D300 which will be around £1300 then I would buy the grip for around £200, spare batteries £80, 2x San Disk Extreme 3 2GB cards £45, Nikon SB-800 Flash Gun £250, Nikon 2.8 70-200VR £1090, Nikon 18-200VR (general use) £400.
Tots up to...