Re: Original Floyd Rose vs the edge
If you're going with Ibanez, you have to replace the original Edge with another original edge. They can be quite expensive, well over $200, maybe. I heard they had REPLACEABLE knife edges. I don't know where you'd be able to get them, but it may be something to look in to.
The new Edge Pro's do not fit in an Original Edge or lo pro. Most people prefer the original edge and lo pro edge to the newer Edge Pro.
If you really like using the Ibanez trem, you may be dissappointed with an Original Floyd- it has a different, stiffer feel. It does, however, stay in tune extremely well, as good as the Edge. Just make sure you have the saddles radiused properly.
Oh- an Original Floyd, as well as Floyd Rose Pro have a smaller footprint than an Ibanez Edge- therefore an Original Floyd or Floyd Rose Pro will drop in with no routing. Matter of fact you'll have extra space