Having seen both myself, either would be great with a newbie IMHO. Couldn't choose who would be the best, but see one, then the other one at a later date, can't lose then. Then tell us all how you get on, in the form of reviews.
Chardonnay likes to sit you down at the beginning, have a very brief chat, to find out how you'd like the punt to progress. And Lisa will approach you, and take the lead if need be. She will be all over you!
I think if you are genuine and really are a virgin, you won't really have to tell them, they will know you're not very experienced. They are both very astute readers of punters, and will act accordingly!