Thanks Dieseler. When I first started I was using 30mg/ml store bought juice back in Aug of 2014. I slowly came down thru the years, and now found that I have to keep my Nic under 10mg/ml, but for me, 10mg/ml is a turning point. I get better TH from 10mg/ml on up than I do from 8mg/ml naturally, but, since Jan of 2015 I have had to keep it below 10mg/ml as I suffer from A-Fib, and too much Nic will trigger it for me (like 180 to 207 Bpm), so, that's why I have been using FA Flash (a TH enhancer) in all my mixes and I Know that it is a workaround, but what am I gonna do, plus, from my own testing of different Nic's, I have found ECX to have the Best TH out of them all. I look at ECX Nic as a dirty type of Nic (compared to other Nic's), It is not clear, it is not smooth, it has a slight smell (but not a floor cleaner type of smell), and also seems to oxidize sooner than the other Nic's I have tested, plus it will Kill the flavor of some of my Hangsen's tobacco flavorings (that is a weird one, admittedly) to the point that I no longer like the flavor at all. I might try using a 95% PG/5% VG mix next time though, just to see how I like it, Thanks for that.
I too have Joyetech's offerings, the Tron-S and also use the CLR 1Ω heads, but, I find that that setup mutes my flavor just a little compared to my other Atomizers like the BerSerKer, CV Hussar (Normal and Micro setup). The best Atomizers for TH and flavor, for me, are the Fev 3 & 4, TaiFun GT-V2, Cthulhu V2 (but that one seeps), and the KayFun V2L, V2L+, all with either KGD or Rayon (I find Rayon to transfer more TH than KGD does, but is harder for me to work with, for some reason).
My preferred is a Menthol/Mint DIY mix, at 1.5% Menthol and 1% INW Mint with 1.75% FA Flash in a 9% ECX Nic/80 PG/20 VG solution. The Menthol is home made with 66% Crushed Menthol Crystals and 34% ED PG and really helps with the TH end of it (it's also Very good at clearing out the Sinuses), I say that because after 52 years of smoking Cigarettes, Cigar's, and Pipe's my Sinuses have gotten rather dry, so the Menthol really helps moisten them up.
I too like a cool vape (in the neighborhood of 140 Heat Flux), versus a warm one. I had tested a Spaced versus a Contact coil well over a year ago, and found better flavor with a Spaced coil, plus, the coils lasted longer between dry burns, but I didn't notice any difference in TH between the 2 different coil configurations. I noticed more difference in coil height than coil configuration as far as TH went, but maybe I should try that little experiment again, just to be sure.
For myself, the vapor amount is irrelevant, as long as I see similar amounts to what I did when smoking Cigarettes (which compared to vaping is not much at all really).
So, I will try a 90% or 95% PG solution, and a contact coil. I might also try your "Real Cig" concentrate to see what that does for TH and flavor (I will mix a small batch in with my ECX Unflavored DIY mix). I usually buy my flavorings from Bull City (that's where I get my Hangsen's from), but will try it from EcigExpress this time.