Personally, I find he’s better doing smoother voices, like Spike, 'Screamer, or TOM, as opposed to things like Wolverine or Zeb.
Like, I thought his Wolverine(Wolverine and the X-Men) was weaker than the Wolverine of say, Scott McNeil(X-Men Evolution).
Like, Steve’s phenomenal, no matter what he ends up doing
there’s just a particular niche I find he fills better than others.
Really? He kinda is Wolverine, he’s played the character like 50 or so times.
IDK man, maybe it’s nostalgia talking, but I thought McNeil did it better.
Favorite VA? James Arnold Taylor because he’s Ratchet and Obi-Wan, OR Rob Paulson, because I heard his voice for years on countless TV shows and only knew him as ‘that one guy’ until I decided to do my research. 
Ron Perlman, Frank Welker, Jim Cummings, Tara Strong, Don Messick, and that all time classic, the king of voice actors, Mel Blanc!