Been running one on my VFR for a couple years. YES Get one.
I found mine used. For the RC that is. A PCIIIr for $175. It uses an older style serial cable tho, instead of a USB cable to interface with your computer. Your computer should have that style port, but USB is way more universal. My bike is all stock, so might wait until I finish my header project/aftermarket exhaust to install it.
If used is an option for you, you can use a PCIIIr, or the newer PCIIIusb. Some even still use a PCII. Wouldn't recomend that one just cause it's a little more limited and technologically older. Besides Power Commander's maps, there are other fuel maps available from tuners that will work too. But the best scenerio is to get the PC on your bike, with the appropriate map (free download from PC) then take your bike and a couple hundred bucks to a reputable DynoJet tuner and get the map tweaked for your particular bike and riding style.
Use this forums search, there's tons of posts on this subject.