The Kramer is my least favorite of the Signature bundles. Maybe good if you're into a '60s-rock thing ... a quick demo will tell you what kind of sound you'll get with those plugs.
I'd rank these bundles in this order of usefulness:
1. CLA
2. Maserati
3. JJP
4. Kramer
But this is mostly a matter of taste. As always, YMMV.
Cheers,
Eddie
P.S. I'm more impressed with the sale price of the API / V-series bundle. Note to self: always wait until Black Friday to start buying any plugins.