I prefer something like Enderal because the Skyrim setting is simply boring to me but it's defintely one of the better quality new landmasses for Skyrim.
It's not really any worse than the acting in vanilla Skyrim. You get used to it very quickly. It's high quality for a mod, which usually has crappy laptop built in mic recordings, if they even have acting at all.
Although Scottish Dracula talks A LOT in the story (he's the main character). So if that voice really bothers you enough, it's probably not a mod for you.