Experienced, definitely.
Resistance may make one's penis harder, and being dominant is certainly appealing. However, after seeing things in hentai that I can't unsee, there's always the lingering fear of the shy girl's disproportionate retribution. Suffice it to say, emotional scars would be the best case scenario. At least with the experienced ones, it either ends in being rocked senseless or left in lament. Either one is fine.