In my mind they are pretty much two different characters so I don't really like picking a favourite.
I adored Toms's portrayal of a shyer, younger Dex, and his relationship with Annie was very sweet and innocent, especially when his family was pretty much falling apart at that point. [i adore Tom as Sammy in Dance Academy so much, so there's that.]
I was curious when they said they were recasting and bringing the Walker's back, and kind of surprised with the personality overhaul they gave Dex in the process. Having said that I think Dex's quirkiness and awkwardness and quick-wit is incomprable to any other character on the show. Dex's World is one of the best things to come out of the show -- that, and Dex's obvious boy-liking tendencies. I will stand by this until proven otherwise (and even then I will probably be in denial, so whatever).
In conclusion, like 'em both, but Charles' Dex is sort of my spirit animal, so I have innumerable feelings for him right now.
Yes, I agree completely!!
Aww don't you just love Dance Academy (Speaking of which, Tom Green's character Sammy turned out gay....Hmmm haha!)