These are awesome but I think they'd look better without the power symbol.
Just looking around competitors, pretty much none of them have a 'gimmicky' logo like a fan or a CD or anything, with most just being a custom font for the name and some having a basic yet seemingly generic logo.
I think this is probably a better direction to follow, as even looking back at my own logos they look a bit 'amatuer website' rather than 'multi million pound turnover business'
The ones that would suit best are stuff like nimz last set with basic text and the flowing colours or these ones by jonny if the power symbol was just a normal O.