I like penises to be a similar size to mine, 8 inches in length and 6 inches in girth. No particular reason for this. I am circumcised, so like the same, but have had some penises that were ultra-clean and uncircumcised. A guy I saw for a long time was a similar size to me but with an upwards curve. I never once failed to reach orgasm during anal sex with him. From the moment he started penetration until I reached climax, every sensation was pleasant. The ridge on his penis was quite pronounced and I think it hit my prostate just the right way. He also kept everything neatly trimmed, and I liked that. I have found that penises between 5 inches and 8 inches in length are perfect for me for fellating a partner.