Do women have more pleasure with uncircumcised men?

Women preffer intact genitalia on men.

Male Circumcision Affects Female Sexual Enjoyment

A survey of women who have had sexual experience with circumcised and anatomically complete partners showed that the anatomically complete penis was preferred over the circumcised penis. Without the foreskin to provide a movable sleeve of skin, intercourse with a circumcised penis resulted in female discomfort from increased friction, abrasion, and loss of natural secretions. Respondents overwhelmingly concurred that the mechanics of coitus were different for the two groups of men. Unaltered men tended to thrust more gently with shorter strokes.  
O'Hara, K. and O'Hara, J., "The Effect of Male Circumcision on the Sexual Enjoyment of the Female Partner," BJU 83 (1999): suppl. 1: 79-84
 

Foreskin Reduces the Force Required for Penetration and Increases Comfort

Masters and Johnson observed that the foreskin unrolled with intercourse. However, they overlooked a prior observation that intromission (i.e., penetration) was thereby made easier. To evaluate this observation an artificial introitus was mounted on scales. Repeated measurements showed a 10-fold reduction of force on entry with an initially unretracted foreskin as compared to entry with a retracted foreskin. For the foreskin to reduce the force required it must cover most of the glans when the penis is erect.  
Taves, D., "The Intromission Function of the Foreskin," Med Hypotheses 59 (2002): 180.
 

Survey Finds Circumcision Contributes to Vaginal Dryness

The impact of male circumcision on vaginal dryness during coitus was investigated. We conducted a survey of 35 female sexual partners aged 18 to 69 years who had experienced sexual intercourse with both circumcised and genitally intact men. Women reported they were significantly more likely to have experienced vaginal dryness during intercourse with circumcised than with genitally intact men.  
Bensley, G. and Boyle, G., "Effects of Male Circumcision on Female Arousal and Orgasm," N Z Med J 116 (2003): 595-596.