X2!
common mistake when ordering a cam is that most people thing that the biggest is the best. What you need to do is match all your parts. A big cam with low compression will be a dog. A big cam and big carb with low compression will be a big disappointment! Unless you are under 90lbs, you need the low end to get you moving. You can also do that through gearing, but then to get up to speed you will have to scream the engine all the time. I bought the Dyno CS1 cam and I am happy with it. It was cheap and gets my 250lbs rolling.
Example. Put 3.73 gears in my '69 Camaro. Could chirp the tires when shifting from 1-2, and 2-3. Outta the hole it was a monster! Unfortunately, to keep up with traffic in SoCal I was turning 3800RPM's to go 75MPH. The 4 speed trans has my now at 2600RPM at 80MPH! Now I can hear the stereo!
Define your goals, let us know what bike this is going on, and set a budget.