yes, there is a massive difference. surround sound is directional, and incredibly noticeable in games.
here in NZ the g35 costs 150 dollars, while the megolodons are 300. if the price difference is so msall where you are, id get the megolodons.
i prefer virtual surround in headsets, because multiple drivers are easily noticeable when audio switched between them, which ruins the experience IMO.
virtual surround is just as good for directional audio, without the seperation in audi drivers.
the g35s can also be switched to stero mode for listening to music and such, which i like. not sure of the Megas can do that though.
i certainly would reocmend one of those two headsets, if the mega is only an extra 20 bucks, id say go for it.
I was doing some research on the Megas on newegg and a lot of people seem to be complaining about problems with them not working