I'm mixed on the voice acting... I think Alexanders in both are good though different.
I prefer the Rosella in IA's game to the one in AGD's which I think sounds too 'mature' for the part, like an older woman. Not fitting the style as she appeared by the three separate actresses in the official series. Or the age she was supposed to be in the game. They went for a younger less, husky sounding style in the Sierra games.
Josh Mandel is Josh Mandel so he's equally fun in both.
I overall agree that the quality is better in AGDI's KQ3. However keep in mind many of the actors who did voice work in IA's have done voice work in AGD's as well. Many of IA's had previously did work in AGDs! So quality might be quality of recording not necessarily on the skill of the actors! Or maybe it's a directorial differences?
I think the rerecorded voice work for the AGD's enhanced versions of the first two remakes did improve things quite a bit over the first 'talkie' versions of their games.
On a side note the new actor that TSL got for graham is probably the best voice over work in the game, but others are wildly inconsistent in quality, IMO.
player has to click after each and every line of dialogue.
I thought they said they are fixing that in gold edition? I think they offer both options in SQ2 Deluxe.