Although I've never shot the D-70 I owned Nikon film SLRs for 30 years. I recently went digital and as all my Nikon lenses were in need of replacement I opted for the Canon 20D (now replaced with the 30D) That being said, I'm sure the D-70 would be great but I also saw that Nikon has a D-80 with 10MP sensor.
A great website to review and compare digital cameras is
http://www.dpreview.com/