Ever noticed how manga porn is way better than the anime/hentai?
Three reasons [in my opinion]:
1. you can stop to admire any one page or panel at any time without having to try to pause it at the right time.
2. as you read your imagination is at work making it seem slower, sweeter/deeper, and more thorough than the videos.
and 3. you can enjoy a wider variety of art styles and usually more genres/fetishes/preferences.
hentai-wsie, Sono Hanabira is the only I like, did it well, IMO.
Oh and don't forget the fact that if you get caught reading it by a family member or girlfriend/boyfriend, it's slightly easier to explain...most of the time.
Well... slightly easier but still rather difficult/awkward. Best scenario is never getting cought, never having to explain xP