I am very happy I got the Softube bundle and I use it a lot! The Tsar-1R reverb is pretty good and better than what's already offered in X1. But it's really simple so I usually turn to other reverbs for er.. reverbing. But I like to use it to add some room to drums.
The EQ's in the Softube bundle is pretty good and the Focusing EQ is IMO worth the price by it self... almost. The compressor is a really cool alternative to what's already there.
I have no problems recomending this package. But if you're not going to use it - happy with what you've got - then I'm not so sure it's for you. However, having all of these in the Pro Channel is GREAT and what it's all about.