Used for years - rock solid, allows custom fields to be shown, selection criteria prior to editing changes, every option you could want. Even REST api saving - proper calls to Woocommerce actions on save so it plays nice with stock reductions to 0. May look a little hinky on the UX but it does what it should - totally solid workhorse on a woo install with over 18,000 products with crazy product meta and custom fields. Hats off mate job well done!
Thanks a lot!