This photo processing lab is highly recommended by Julian & other folks for their service & quality:

Foto Image Studio Lab
Blk 88 Whampo Drive #01-855, S320088
(Beside to Whampo Market, where you can find great food there)
Look for Mr Tan Cheng Hai

(Note: This is not an advertisment ya! :rolleyes: )

This lab gets my vote as well. I'm currently sending my prints here and I'm absolutely assured of their quality service.