I'm looking to purchase an Arduino for a little robot I'm going to make. The reason I've chosen Arduino is because it's much easier to use with servos and LEDs than a Raspberry Pi, but a nice little touch would be to have it play some sounds (voice recordings and mechanical SFX). I was just wondering (now I'm not after opinions here, but looking more at how each of the boards have been designed) what the best Arduino board for playing sound is, or if they are all pretty much the same in this regard.
(Note 'pins' was the best tag I could find for this post for lack of a 'sound' or 'speakers' one. If you want to edit it to something more appropriate please do)