Also, forgot to add....
Half of the time, the dogs success is dependant on the handler. YES, BC's (for example) have a much higher chance of being better then a lab. HOWEVER, at the trial I was at on Saturday, the lab outclassed, outran, and was much more intuned then the bc.
From what I understand, you have very little experience handling agility dogs.
My first dog, I lucked out because he was on the slower side, and SO easy to run. Thus, my handling is much better. I tried out new techniques, and have discovered ways that work and dont work.
I feel ready to take on this new dog because I have had practice on an easier, less drivey dog and have had success. My next dog will be THAT much better because of me learning and not jumping in too quickly. I am SO happy I waited!
My suggestion is to try it out with your current dog. Or, if you dont have a dog, go watch some classes. Examine your lifestyle, then pick a breed that fits you.
~Tucker