I say it depends on your budget and what you're going to use your car for.
I put something similar on my Vert. That car sits 75% of the time and when I do take it out it is for "normal" driving with the top down. NOT for racing or 100MPH pulls. My wife and I take the car out for a nice drive and to go get ice cream or something. So, for my use I think it is perfect.
Now, if you're going to race your car, do some spirited driving, daily drive your car, or be aggressive with your style of driving, you may want to get something a little better. As mentioned drilled rotors are prone to cracking due to the heat, which is why, if you look at the ad, they try to sell you on the fact their product has more cooling fins built in.
That's why my coupe has the Roush Alcon brake set up on it.....