i have an SCA220 in blk pearl and i feel it is a mid point guitar between the S series and the SZ series with a bolt-on neck. the neck is nice and not a s meaty as the SZ series and the scale is between an RG/Strat and a
Les Paul so it is a bit smaller than a standard S series. the frets are a nice medium height and overall the guitar is comfortable and has thick tone (TZ and AN upgraded pups). I use it for drop tuning and as a back up.
i snagged mine for super cheap from a store that had two that they sat on for 3yrs.