Got the bundle haf year ago, but would not do it again (big Cakewalk fan though).
Concrete Limiter, in my opinion, really sucks life out anything with tempo drums.
Even used just as a -0.1 limiter without boosting, to my ears it sucks life out of the beat.
Also on my computer, I noticed Boost 11 used only as a limiter can cause same problem.
When multiple plugins on a bus, or more Boost 11 in project, it kills a lot of peaks.
But just using 1 Boost 11 as peak limiter is fine, best check the led peak indicators at 12db-scale to be sure.
If the movement of leds really reduces/flattens when you swich on Boost 11, I guess there's a problem.
The bundle pack in my opinion is ok, but not really a must have specially if you've got other stuff on your wishlist.
just dropping my opinion