Fresher better! it is.
Hey Redpaul! It is hard to make a rule, but if I had to make one, I also prefer to see a lady earlier in the evening: 1st or 2nd appointment, especially with agencies of high volume. As the Doc points out, the ladies who drink or take "stuff" are more sober, which I appreciate. Of course, a gilr who needs to "loosen up" a little with some chemical help may be wilder later at nite... But also the girls are less... sensitive in some areas (imagine being banged heavily for the 4th-5th-6th time...). And there is less chance of accumulated little souvenirs from previous dates. Finally, girls who have a real high sexual apetite have not have it fulfilled yet, so they may be more into it--though I am not sure about how true this one is.
There are exceptions though. True superstars will be great almost no matter what time it is--although they all can have a tough late nite. Girls who work little: it may be because they are not so good... hence a bad date is usual. It may also be because they don't like their job much, again a reason to avoid them. But the ones who like what they do but work little are usually more into it, less blasée...