Homebrew PCBs

Hi,

I'm looking to try out photo etching and am considering the options.

Can someone please recommend a UV lighting source which:
 - is cheap
 - has consistent UV output
 - is readily available, or easily made up from items from general
   hardware stores
 - gives good results with low exposure time (preferably 5-10 mins,
   I'm not keen on 30 minutes)

Also, is it hard to get good results using spray-on resist? Should I
just cop the extra cost of pre-coated PCBs?

Cheers
David