I think people get caught up thinking that just because its Canon, its better. Which (IMO of course) is not true!
Through experience of using both Nikons and Canons I have chosen Nikon.
Prehaps DK has not mastered the use of a superior Nikon eh?
And as or lenses, there is a huge range that work on the D60/D40. Yes there are more canon lenses and you can use lenses going back to the dark ages, but Nikon make a wide range of AF-s lenses from 50mm prime to 300mm Zoom. Plus both Sigma and Tamron have now realised that they need to cater for Nikon owners and also produce a wide range of lenses with built in motors. In general, this makes AF-S lenses quicker to focus than the budget canon models, until you get to the more expensive USM Canon lenses.
The trouble is, the basic Canon Lenses use a micro motor, which just does not cut it against AF-S and USM.
Canon L glass and a lot of there mid-entry glass is excellent, but if you can afford L glass, you shouldn't be putting it on a crop sensor!!!
And for reference, these lenses will work on the Nikon, there have been some new ones since too:
Nikon
AF-S DX Zoom-Nikkor 16-85mm f/3.5-4.5G IF-ED
AF-S DX Zoom-Nikkor 17-55mm f/2.8G IF-ED
AF-S DX Zoom-Nikkor 18-70mm f/3.5-4.5G IF-ED
AF-S DX VR Zoom-Nikkor 18-200mm f/3.5-5.6G IF-ED
AF-S DX VR Zoom-Nikkor 55-200mm f/4-5.6G IF-ED
AF-S DX Zoom-Nikkor 12-24mm f/4G IF-ED
AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G ED II
AF-S DX Zoom-Nikkor 18-135mm f/3.5-5.6G IF-ED
AF-S DX Zoom-Nikkor 55-200mm f/4-5.6G ED
AF-S Zoom-Nikkor 17-35mm f/2.8D IF-ED
AF-S Zoom-Nikkor 28-70mm f/2.8D IF-ED
AF-S VR Zoom-Nikkor 200-400mm f/4G IF-ED
AF-S VR Zoom-Nikkor 24-120mm f/3.5-5.6G IF-ED
AF-S VR Zoom-Nikkor 70-200mm f/2.8G IF-ED
AF-S VR Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED
AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED
AF-S VR Nikkor 300mm f/2.8G IF-ED
AF-S Nikkor 400mm f/2.8D IF-ED II
AF-S Nikkor 600mm f/4D IF-ED II
AF-S VR Nikkor 200mm f/2G IF-ED
AF-S Nikkor 300mm f/4D IF-ED
AF-S Nikkor 500mm f/4D IF-ED II
AF-S Nikkor 50mm f1.4
AF-S Teleconverter TC-14E II
AF-S Teleconverter TC-17E II
AF-S Teleconverter TC-20E II
Sigma
12-24mm F4.5-5.6 EX DG ASPHERICAL HSM
17-35mm F2.8-4 EX DG ASPHERICAL HSM
APO 50-500mm F4-6.3 EX DG HSM
APO 70-200mm F2.8 EX DG MACRO HSM
APO 100-300mm F4 EX DG HSM
APO 120-300mm F2.8 EX DG HSM
APO 300-800 F5.6 EX DG HSM
APO MACRO 150mm F2.8 EX DG HSM
APO MACRO 180mm F3.5 EX DG IF HSM
10-20mm F4-5.6 EX DC HSM
APO 50-150mm F2.8 EX DC HSM
30mm F1.4 EX DC HSM
50mm F1.4 EX DC HSM
APO 800mm f5.6 EX DG HSM
APO 500mm F4.5 EX DG/HSM
APO 300mm F2.8 EX DG/HSM
80-400mm f4.5-5.6 EX DG OS
new Sigma additions
17-70mm f/2.8-4.5 DC Macro HSM
18-50mm f/2.8 EX DC Macro HSM
18-50mm f/3.5-5.6 DC HSM
18-200mm f/3.5-5.6 DC OS HSM
55-200mm f/4-5.6 DC HSM
4.5mm f/2.8 EX DC Fisheye HSM
10.mm f/2.8 EX DC Fisheye HSM
Tamron
18-250mm AF F/3.5-6.3 Di II
18-270mm AF 3.5-6.3
17-50mm f2.8