Before you start throwing out insults you might want to read the responses.
gsxcorey juice box spreads out the pulse and can only add fuel and not take away fuel. The pc3 can do both. the juice box is very old technology. I would recommend the dynojet or bazzaz products over the juice box any day of the week.
YamaDan PCIII has been around a while, and is the standard that all others are measured against, the Juice Box is new, from Two Bros Racing.. They're both good companies.. both cost about the same..
What are you looking for? Do you have pipes? Need to tune the bike? Or are you looking for more unusable hp?
I'll be honest, you asked a typical SQUID question. And you responded in a similar fashion.
The "Mods" evidentily do care as I am responding to you in a nice manner. Some would not be so kind.
The overwhelming response to your question was go with the PC, yet you choose to get your panties in a twist over 1 response. Welcome to the internet, everyones got an opinion whether you like it of not.
Why don't you take the informed responses and make your decision.
And stop with the forum insults.