Maybe it's different for me bc all my IIC+/++ are non reverb models and from what I hear that's what I prefer. It may be time to roll some tubes in the preamp, something just sounds off. No way should anything be whoopin ass all over that IIC+/++ bro...it did take a long ride in the brown van across the country, not good for any amp.
I've had two B+, six C/C+/C++, and 5 III. (and 2 IV, 2 V and a JP) Mike has serviced all of my II/III/IV so they're all good to go. I'm pretty comfortable with what the natural differences are between the amps, it just is what it is- like you said- personal preference!
The B+ KRG has the super pissed off thing like the 60 watters have, but with 180 watts. The C+ are just more... refined. Which is why they record better IMO.
I actually wrote a new song today for my band & recorded a scratch pad version of the guitar & vocals to hash out the idea. I used the IIB+, all amp. One thing with that amp is if I bring the 2200 slider up it really fixes the issue with getting lost in the recorded mix. It still doesn't sound like the C+ though, they're just different amps. Here it is if you want to hear it.