I have recently been in the market for a good seven string guitar, and the prestige series are a bit over my head in price. I was wondering if the Edge-Zero II Tremolo is a good system. I have heard alot of crap about tremolo systems on the standard RG Tremolo series. I have not been able to play one and I doubt that my local GuitarCenter or my local Bailey Brothers will get a guitar with this tremolo in stock. So, again, my question is; is the Edge-Zero II Tremolo a good tremolo system. In other words, does it hold tuning well for someone who would play stuff like Steve Vai or Gary Holt? Thank you people!!!