Hi. I am off to Cambodia to see Angkor Wat with the wife and a friend pretty soon.
I am using the E Visa whilst Kanchana and Mark are not, so I intend to let you know how they compare when I get back.
So far:
I applied for the visa by going to
http://evisa.mfaic.gov.kh/Filled in the forms and sent it away on a Sunday afternoon. The next morning (Monday) my visa was approved and emailed to me. Excellent.
You need to have a Pay Pal account and a electronic photo to put on the form. It cost US$25.
Oh, you need to have access to a printer as well.
So far it seems good and hassle free and will save me a page in my almost full passport.