Yeah, if 25 dB noise reduction is inadequate for your needs, these are not a good choice.  

I've been wearing them in the shop, and so far they are ideal.  They are comfortable—although not as comfortable as nothing at all.  I really like the way they're programmed to clip sharp noises, and go passive if the noise persists.  It's barely perceptible other than things get quiet, and if music is playing, it still sounds great.

I see reviews that complain that, in a noisy environment, the microphone is useless for phone calls.  That's not an issue for me.

So far, I'm happier than a pig in shit.  I love these things, and having Festool in my ear makes me a better person.  I'll post an update if my opinion changes.

Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner