Does anyone have any knowledge/experience with Ugartechea high grade sidelocks as compared to the more common Arrieta/ Grulla/Garbi/Aya models.

I am not referring to the Lion Country model 4 & 5s- but the catalogued model 116/ 119/ 1030/ 1042 ? ( see link) http://www.sidebysideshotgun.com/aoc_sidelock.html

Which models of the big 4 (not including Pedro A) would these models best correspond to ?
best regards,
JBP