I think big bores setups for 1/10th are not perfected yet, hence the more consistent thoughts about small bores.
Trying back and forth on the 410, the small are easier to drive but more roll over on high speed open corners and are less stable on bumps/jumps. not more bottoming with the BB on the positive side
I guess we have to work on pistons as most of them need drilling to custom diameters. So far I found them too smooth (not enough pack) and to slow to respond.
Hope I will find a good setup on my BB Vega as I sold the other one with small bores !
Why did you find SB better indoor ?