I'm in the same boat as Wombat, I would prefer a girl with a higher partner count. I've slept with maybe 8 or so virgins, and it was never anywhere as nice as someone who knew what they were doing/knew themselves, etc. Being a virgin just comes with a slew of hang ups and issues that annoy me. In my experience, virgins lacked confidence, and I guess I'm attracted to that.
That being said, this last girl, the girl from high school, was telling me she was really worried she wasn't going to be able to please me, because she knew my reputation. I laughed and went "What reputation? I've been married for 11 years, pretty sure I don't have a reputation for anything." and she said "Ohh I heard about you a lot back in the day, seemed like everyone I knew had either slept with you or knew someone who slept with you, so I was just worried with you being so experienced." I laughed again and asked "How many girls do you think I've been with?" and she said "Well... I don't know... but I would guess over 200?"
She was number 25. I then got to continue laughing and go "Wait, what kind of girl are you that thinks I've slept with over 200 woman and STILL wanted to jump into bed with me! hahah"
She told me her number. It was over 50. I'll be honest, I was taken aback and it took a minute to process and determine that it didn't bother me. I basically couldn't think of a reason to be upset, knowing that I'd like to be able to be in her situation, so why should it bother me? But yeah, it definitely took a minute. I think I've introspected it enough now that a high number like that wouldn't bother me in the future, especially since I'm not getting re-married, but yeah, I do feel like you can infer some things based on numbers.
Anyway, my point was, I tend to agree that I'm sure there is a lot of phycology that varies from person to person on what they prefer, it's not just cut and dry, but I would guess that most people prefer partners who have some experience, but not too much. Probably 4-8 previous partners is what most people would be looking for would be my guess, enough so that you know other people have desired them in the past and they have some experience, while few enough that you can still feel important and special in some way.