I consider myself to have above average experiance with shrooms, but I'm still a relative novice to acid. I've had it for a few months at 2 different times, and prolly ate about 15-20 hits of each batch during that time. One batch I was told had been dosed to 100mic each, the other I would guess was about the same from the experiances I had. I've absolutely loved everyone of my acid trips so far. The most I had was 3 in a night, and it was a blast. I'm pretty well beyond my push the limits days, and just want to enjoy a good trip and have some fun. The very last time we tripped was the first time we went to a concert or anything, and that was a lot of fun, but I would not really recommend that for a first timer.
Anytime I get something new, whether its mushrooms, or acid I typically play it safe the first time, and only eat 1 hit or only eat an 1/8(atleast till I see how I feel a few hours later). I like to trip in a safe controlled setting most of the time just because there is 99% less chance of me getting myself into trouble, by which I mostly mean with the law, but also in regards to having a positive fun trip.