That's interesting, because I find the new TC sweeter than the JC Original. I think it's the extra vanilla that gives me that impression. I love them both, though.
I just tried cutting JC Original (reduced-PG) with maybe 1/4 ECOpure Gold, and wow! Lots more vapor, better consistency, and the flavor didn't dilute nearly as much as when I cut with VG, nor did the flavor change appreciably. I'll try again with Rich (assuming non-evil Rich ever appears again on this plane of existence).
By the way, I've been using JC liquids almost exclusively for two months, and never had a single atomizer problem (and this with six atomizers). My only maintenance has been to boil the atomizers in distilled water a couple of times. Then again, I use a low-power battery. I have a feeling the problem arises with higher heat. If I start using JC in my 510, which is ECOpure-only so far, I'll probably restrict its use to a single atomizer until I can see whether it's causing any buildup.