>For the similar requirement I thought about using a mover, but hadn't found a decent one and decided to use multiselect grid instead. In addition I added a listbox, which showed selected items. This listbox also had ability to delete item (unselect). Works fine, though I have only ~300 items.

What you described is a mover just implemented with grid and listbox instead of two listboxes. BTW, what didn't you like about the mover clases from FFC?

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