Re: New to RG - Which one?
I wouldn't say the newer RG's are a no-go because of the EZ trem. It's a GOOD trem, make no mistake. But most people on here do seem to favor the original Edge and Lo-Pro trems.
That said, you would be in great shape with any of the choices you've listed. Those are all quality guitars that will last you a lifetime if properly cared for. You do step up to real DiMarzios with the RG3570Z, but the other two are still great guitars that you might save some money on, and then you could get the pickups YOU want.
Play all of them and then decide what you like best. If the only issue is pickups, that's an easy fix. Mainly, find one you like the way it looks, feels, and plays. You can always tweak the electronics later.
But yeah, I'd also keep an eye on Craigslist or eBay for a used RG500 or RG700 series as an option. Even in a weak market they turn up, and lots of sellers on eBay will ship to Canada. And you cannot beat those guitars for shred.