JB publicised this on his live stream yesterday. The link below it to a Goggle spreadsheet he's put together that contains a whole load of pre-built (BNF/PNP) quads that shows proven motor size / Kv / LiPo combinations which are commonly used for various sizes of quads. This data is really useful when you are building your own quad because if you are struggling to work out what spec motors you need, this gives you a really good starting point on which ones to start looking at. Just filter by the various columns to narrow down the selection you are interested in.

Of course, you can also just go on Rotorbuilds, but you don't always know if the motors used on those builds ended up as a success or a failure.

This is a work-in-progress spreadsheet that will continue to grow as time goes on. There's currently a very limited selection of quads over 5" (only 4) but more will eventually get added as they appear on the market.

The one additional useful thing that is missing is the ratings of the ESCs used on these BNF/PNP quads. JB said he might consider going back and adding that info for reference, but it's not there yet.

https://docs.google.com/spreadsheets/d/1xpjDN-GJIaSJ_yyTewleAqNTGeFBCXdAb6RDpASf1Ks

JB has just released the following video to go with the spreadsheet I linked to in the first post...