I bought Recabinet 3.5 while on sale and I am very pleased with it.
One of the reason I bought it was that it has a 64 bit version. I don't always have good luck with bit bridge.
Second reason is that they allow you to load your own impulses.
I believe iFace is only 32. Their trial at
iFace trial Recabinet will allow you to browse any directory for impulses.
Recabinet allows for two cabinets and two mics used at once. There are about 20 cabinets and 8 mics to choose from. On or off axis for mic placement and close mid far for placement and an eq on each cab as well. ( Now realize you know all of this from the demo)
I believe MixIR2 allows for many other combination. And their impulses have great reviews.
Most of the Recabinet presets are seem to be for rock/metal sounds. But since you can load your own now not a big deal.
I haven't played with the dynamics dial much. I can hear a change but my limited knowledge keeps me from being able to explain what the change I'm hearing is exactly. Sorry not more help there.
Third reason is I get a lot less questions if I say I'm spending $20 rather than $50.
Hope some of that helps.
Matt
edit to Fix Link, I Hope