Which one would I pick? It would all depend. If I need a CUSTOM tune to support a bigger turbo, meth, N.O.S. or something along those lines, I would choose the SB.
However, with my current mods (basically every bolt-on except Turbo Inlet/EMani) I'm very happy with my Cobb AP.
In reality, 99% of those on any of the Mazda forums would be happy with the AP using the 103 Maps (using the right map for their mods). The only time the SB is better (right now) is if you need a custom tune to squeak out every ounce of HP/TQ you can. IE Custom Tune.
The dyno prior to my AP 103 Map dyno, I put down 248WHP/278TQ running 18PSI with CAI, TMIC, Test Pipe, Forge BPV, MBC/Map Clamp. My AP Dyno was 286WHP/296TQ running FMIC, SRI, Test Pipe, HKS BPV. I gained almost 40WHP with the AP with only minor mod changes. I'm sure that with the TBE I have over 300WHP now.
I'm sure 99% of the people here would be perfectly happy with those AP results. Those that need a custom tune can go with the SB or wait for the AP Protune. Ether are great choices.
You keep bringing up your RESEARCH subject so I have to question it. You are running a CPE FULL FLASH with the little mods you have? Also, if you really did want the best you would not be running a Synapse. I'm pretty sure even those of the likes of Laloosh and Palerider would agree that the Synapse has been proven to be the biggest POS ever produced for our car. Sure the Youtube video looks cool, but it's a lie. Everyone who jumped on the Synapse when it was released got screwed. Driver311 was the one pushing it and got a LOT of people to bite. It has went down in the Mazda forums history books as the biggest scam ever.
I bought synapse to prove that their claims were false on their hp claims and that their product was full of crap, but their BOV actually did gain HP compared to my other BOV, and the response was alot better than the HKS SSQV bov and I actually gained HP. I bought their product more as a research and was really surprised and that is why I'm keeping it. I will update my mod list, it's out of date.
And biggest scam ever? A BOV is not a MOD that should ever be high on the list, and the Synapse one is good quality and proved to be worth it to me. I was the first one to bash their youtube video, you can go look it up bud.
And even if I was completely stock, you going to try to tell me that 100% throttle position is not important? Lol, dude get a life. (rlaugh)