gambit's tas voice is probably the only voice acting performance which could never be surpassed.
scott mcneil has a history of playing anti-heroic types so his voice worked very well with wolverine without sounding forced. dodd's wolvie was somewhat one sided considering he couldn't kill people in the show.
Gambit was recast in the last season of the 90's X-MEN but I assume you mean Chris Potter, who played Gambit for 4 seasons there. I agree, no one who has voiced Gambit has come close to him.
I don't see how being unable to kill people has "hindered" Wolverine's voice actors too much. Only Blum has played a Wolverine who was able to kill people (although maybe Hamill did in his video game, I don't know). In cartoons usually made for network kiddie TV, acts of murder are rarely discussed.
I will admit that Dodd did sometimes have to make some borderline painful puns. The dialogue in the 90's X-Men cartoon was very much a product of it's time, often sounding right out of a comic book from the era more than realistic lingo. Nearly every character had to sometimes go through either stilted lines, melodrama, or some awkward puns; Storm, Jubilee, and Rogue being among the worst offenders (Chris Potter had plenty of cheesy lines himself as Gambit). Still, the show also gave their actors plenty of chances for genuine quality and drama, and Dodd often always pulled off Wolverine well. Part of me wonders if many of the actors who have played him since either figure they have to stack up against Dodd or whatnot.
While Scott McNeil naturally loses some "gruff" factor for being a fan of bottled water and often having his Logan play baby-sitter (especially during an era when Kid's WB, believe it or not, wanted less of Wolverine because he wasn't a teenager, something that will NEVER happen again for any X-cartoon hereafter, and wasn't a factor for the first), he managed to pull off the role without having as much "throat cancer raspiness" of Dodd or even Blum at times, which was appreciated. There were plenty of episodes where he got good lines, and everyone in EVOLUTION got to talk more like real people rather than comic book characters, Logan included. Plus, he growled well. Wolverine was often a jobber in that show, losing to make other characters look good (because he was the only character who could survive things like being zapped by electricity or punched through walls), as the original English voice of Piccolo from DBZ, it was a role he was sadly used to.
Blum's plain awesome as Wolverine, though. No question about that.
If I had to list the four actors from my personal preference, it would be tough but it may look something like this:
1). Cal Dodd/Steven J. Blum (tie)
2). Scott McNeil (very close second)
3). Mark Hamill (distant third)
