not sifu just share my experience
i own 3 of the lens below. dont ask me why

Nikon 50mm f/1.8D AF ~MYR400
Nikon 50mm f/1.8G AF-S ~ MYR700+
Nikon 50mm f/1.4D AF ~MYR1000

at the end it sell off all and keep only 50mm f1.8g, so far the best i would say
but if u using this on DX body, suggest you get 35mm f1.8g for greater view coverage. the 50mm on dx is very very tight...

for main differences
D lens:
- old lens
- with aperture ring built in (u can adjust the aperture by turning it)
- no focus motor. focus will depend to the body example d300s, d90, d7000 n etc...
- noisy when focus
- touch build, normall all metal body

G lens:
- newer lens
- no aperture ring. fully control by camera body
- with build in motor. camera like D3xxx and D5xxx can auto focus
- very quiet when focus

So many haha
Which particular photos? 

baby FTW!!!!