I disagree.
Heroes of Newerth is is just a blinged up cheap version of DotA.
You can get the same gaming experience by playing DotA on a PVPGN(Private server) as playing HoN. One game of DotA uses up ablut 5MB of data whereas HoN uses up to 17MB a game. The overall graphics and sound is great on Hon. But why pay to play a single game with almost no variations? On Warcraft III, you get thousands and thousands of maps including DotA, which HoN is basically copied, for free.
By the way, I have three Beta Invites for HoN, if you want one, just PM me.