^ok, having not put them head to head, but from all i hear, it's at least as good as an OFR. (i've tried both trems, just not head to head. They're both great, basically)
But 90% of that is preference with the feel of the trem, etc.
If you want an ibanez edge, you can get an ibanez dealer to order one for you, I think.
Or, a handier way is to get a Gotoh trem on wdmusic. The good one is £110 for the non-low-profile version. Gotoh made the edges, afaik, so it's similar:
http://www.wdmusic.co.uk/shop/products.php?category=207&product=1131The locking nut is an extra £20, though, but that's still £15 cheaper than the cheapest I could get an OFR for.