I probably don't write reviews of software I use anywhere near often enough, but having owned this for a while I felt that I needed to give a first review for it.
In short, this is an extension of the chainer or routing type software that is already out there, but with much more than any of the existing software can offer. It's only been around for a short while, but the developer has been hard at this and added new features and fixed bugs at a pretty amazing rate. There are a few more new features already in the pipeline, and I'm sure they will be implemented soon.
If you've ever been frustrated with the limitations in routing possibilities for your DAW, then this software might be just the thing you're looking for. Not only can you perform complex routing tasks easily, you also gain a lot of control over the parameters of other plugs that are routed from within VSTforx.
It's just gone into 64-bit, and the developer is going to start working on a bridge, so that you can also use 32-bit plugs within the 64-bit version. To me this is a huge thing - it opens up so many possibilities that would otherwise be extremely complex or even impossible.
There is something of a small learning curve with this, but once you get used to it, things should be pretty straightforward.
Development is going at a pace and that is something of a two-edged sword - in exchange for rapid development, you get a few bugs in releases, but the dev is very fast at jumping on them and getting them fixed.
As for price? It's ridiculous how cheap this is, and it should be in the price range of everyone. If you're interested, I'd suggest you try the demo and then consider supporting this dev, who really has created a pretty unique product.