i've read both sides of the argument for the 30w speaker in a 30w amp thing, some people say it will be fine, others say you should go for safety and get a much higher rated one. i've no experience with this so can't comment.
hellatone speakers, to the best of my knowledge, are just celestions that avatar wear in for a while and charge you extra for. if you break some celestions in yourself they should sound like that after a while of playing anyway.
i might be wrong on this, so don't quote me on it! but to me it has "gimmick" written all over it.
fwiw, i'm seriously considering a g12h30 for my lc30.