Re: rg1570 vs. rg2570z
The necks are going to be the same dimensions. You're paying a little more for the pickups and sharktooth inlays. The Dimarzio IBZ pickups are pretty good but a lot of people switch them out for "real" Dimarzio's. I chose to leave them in my RG2550Z that I got in 2008, and I have no plans to change them out anytime soon. I say just go with whatever guitar is prettier in your eyes. If you don't like the pickups, that's a quick, cheap fix.
As far as the tremolos go, if you like floyd rose's or any other non-zero trem, you might not be too crazy about the Edge Zero. This might be especially true if you do a lot of whammy bar stuff. I love the Edge Zero though and probably wouldn't buy a guitar without it.
One plus about the Zero is you can go between standard and drop d using the fine tuner without noticeably affecting the other strings. You don't have to loosen the locking pads up by the nut or adjust the springs in the back.
Last edited by xXLinkageXx; 02-18-2011 at 09:40 AM.