Faced with a similar choice as 'jpowell490', I elected to go with the ECU flash. I did it the poor man's way, and used a map from a lightly modified bike (similar to my setup) versus dyno-tuning. So far, things seem to have worked ok. I took a little chance I suppose, expecting the map to work well enough, but it appears (after several hundred miles) to have worked fine. My 'gauge' is that the pipes have not blued, and the low-speed 'surge' is gone. Pretty scientific, huh?
All the 'fuel-adders' have their advantages, and disadvantages. There are fanatics for each, and die-hard haters of each. Personally, after a lot of research, I was convinced that any of the three solutions being discussed, i.e., BAZZAZ, PC-V (or III), and 'Flashing' would have worked for my application (Yosh R-77's, and a K&N filter). I chose the least expensive route. Also, it was the method I was familiar with, having done something similar with my Harley at one point. Also, personally, I didn't want additional hardware on the bike, and I kind of liked the idea of removing the speed restriction so that any time I feel like it, I can exceed 186 MPH...(Ok, so I'm making that last desire up.)
As for the 'worth' of something, I heard somewhere that at today's prices, the 'components' of the human body are worth less than two-hundred bucks. The point being, things have an intrinsic value, separate and apart from their 'retail' price.
One thing that does intrigue me about the PC-V is the 'auto-tune' add-on. That just about sold me on the PC-V. In fact, it's the factor I wrestled with, several months, before finally deciding to flash. (Meanwhile I left the baffles in the cans, and didn't install the K&N).
BTW, for those who might not have dealt with smithabusa, he showed himself to me to be an honest, diligent guy. If he's omnipresent in these threads, it's because he's a true believer in the flashing method, versus all the others. Sure he'd like to sell you an interface. Nothing wrong with that. And in my opinion, you'd be smart to buy one from him. (I don't know anything about Greg other than what I've read by him here and elsewhere, and what I learned after a half-dozen e-mails, and purchasing an ECU flash-interface from him. We don't owe each other money, have any common business interests, etc. I'm just a satisfied customer).