I suppose it all depends on what you're there for. If both are providing the same services i.e. DFK, BBBJ, DATY, FIV ect. I am in fact getting the GFE, anything beyond is just icing on the cake. Regardless if one of them seems less enthusiastic about her profession than the other, I'm chiefly there for one reason anyway so it's all good. Certain people just warm up to others quicker, and it's usually 1s-6s. 7s, 8s, and 9s tend to take longer because what they have to offer is rarer and they undoubtedly get more bids than they are comfortable with. But you'd be surprised at what a 10 can accomplish in longer sessions. When I meet with a provider for an hour for the first time, I'm under no delusions that she in love with me, she does not know me and more than likely still suspicious and no amount of prescreening will eliminate that for her until you cut the chit-chat and get down to business. 10's are notoriously cautious and I understand that, so I prefer to get my sample on and put her mind at ease. After the session is over, then I can decide if her "services" were sound enough for me to want to see her again. If want to ensure that feeling of familiarity the very first session, then I will book enough time for her actually get familiar. All that aside, the OP never stated if there was a rate difference so I'm assuming it's the same rate for both, so I think I will roll with the A-level 10 barracuda