I will always prefer the former, even if the latter has grown on me somewhat. For me, the pitch causes the voice to more often reach that sweet spot, where it really brings out the "NGEEHHH" in Wario's voice, which is very important because it sounds like the EeHhHh from Wario Land II/3 made real. Even beyond that, though, I also think it matches what Wario's supposed to be about more, you know? It kind of sounds like a really, really shit attempt at doing Mario's voice, which makes sense because Wario's career was jumpstarted by being a shit attempt at being Mario. Not just that, but it also sounds more odd given the context of Wario's physical presence-- you'd expect a big, wide, heavy-lifter guy to sound like Wario does in Brawl and Shake It, for example, but you probably wouldn't expect him to sound like how he does in, say, Mario Golf 64 (or the fucking Wario Blast, Land 2, and VBWL commercials--). This is kind of a flimsy reason in itself, I suppose, but that doesn't stop me from citing it as one. Another thing, though, and it's probably of note, I think; I can picture him in- say- Wario's Woods sounding like 2003 Wario, but not 2009 Wario.