@ shelter
Comparing porn and food doesn't really work, at least not in my book. I eat exactly the same breakfast every morning, I drink gigantic barrels of coffee many, many times a day, and just before going to bed it's a big cup of tea, lapsang souchong with a tad of milk, nothing else. I get grumpy, sour and pouty when I don't get the same procedure as last year, miss Sophie.
@ otage
Speaking with wisdom! Imagination, that's the central fundamental word! The ONLY porno cinema that will cater ONLY to EXACTLY your sexual desire is - of course - your own imagination! It's the only cinematographer that knows exactly what makes not anybodys heart tick, but your heart tick, and not any guys cock rock hard, but your own cock rock hard.
Let your mind float and notice what makes your juices flow, and try to not care about all socio-sexual taboo's; in your imagination you can be totally free in a way that's just impossible in the social world.
When you have made this imaginary and emotional experimentation a few dozen or hundred times, make some notes about what kind of GH-porno that comes closest to what make your cock really hard - and stick with the kinds of porno that you now KNOW is good for your masturbatury life!
There's too much talk about change and variation; what should be done is building good wanking habits - and sticking with them!