Pinball Arcade & Stern Pinball Arcade

[TheDuke64]

Hello!
I bought during Halloween All the table packs from Pinball Arcade and from Stern Pinball Arcade too (it was the end, I didn't had time to compare).
It seems Stern Pinball Arcade has the same tables than Pinball Arcade and so, I paid Twice for the same tables. Before i ask for a refund, what is the difference between Pinball Arcaed and Stern Pinball Arcade and which game should I keep?
Thanks for your replies!

[AcadDude]

If you play them in Pinball Arcade then keep that version of them. That way you don't have to switch between them. Stern Arcade is a junky front end anyway.

[DoomSooth]

I believe Stern Pinball Arcade is a 64-bit program.

[qu3ntenten]

A bit late but if you own TPA tables, all Stern Pinball Arcade unlocks free. You only have to purchase once from TPA.