The bundle is worth it, provided you don't have similiar 3rd party plugs. In order of usefulness compared to X1 Pro is the reverb, which is better than X1 Pro's, as well as the focusing EQ - which is both great and quick and easy to use.
The FET is similar to the PC 1176, while the other SoftTube EQs are equal to the PC EQ, so you don't really get much exta firepower from them (tho they are all good plugs).
The other good thing is they come as reg. VST's, so if you want to double comp or EQ>comp>EQ etc. you can slot them in the FX bin and put it pre or post. You get a little more flexibility using high-quality plugs (tho the sonitus usually will sufice for this function).
If you don't have a good, algorithmic reverb it is well worth it for that - the other stuff is icing on the cake. If you have spent similiar bucks on a reverb unit, the cost/benefit ratio is lower.
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