So in a 2016 Twin Cooled Limited the answer is simple NOT
so many choices

So or me on my stock bike with 2-1-2 Stage 1 stuff its gonna be Woods 222, 555 or 777
OR Andrews 48 or 57H ( which I already have)

With an eventual Big bore kit in the future

 

With an eventual Big Bore kit destined, there are yet even many more choices, and bear in mind, as the engines swept volume increases, so does the compression, unless of course, a dished piston is used, or combustion chamber volume is increased.
Scott

 

Scott I have not found much data (dyno sheets) on the Andrews 48, or CR, .570, can you post some from Rushmore builds