I am pretty loyal to the people I buy from. When I first started vaping there was a guy out in the western US that I bought from but he went under man. Now that Totally Wicked has opened up a US branch I have been buying from them for a while and they are great. I just placed an order like 10 minutes ago by phone and it will be here tomorrow. As far as I know, I have just used 100% PG and I always have bought the pre-mixed ones.
I know what you mean about it being a sickness. I think I probably have at least 7 DSE 901's, 4 Titan Tank units, 3 Tornado Tanks and 2 eGo-C Tanks with the 2Ml mega tanks. I also think I probably have some really old original mini E-cigs and maybe even a few joye original manual batteries.
Overall when I am out and about, I like the Titan Tank because it has an automatic battery and is slender (about the same size as a 120s cigarette) but at my office and around the house I usually go for the big higher powered manual Tornado and eGo-C.
Bugaboo still likes the DSE 901 the most because it is automatic and has a tapered tip like one of those plastic tips on cigars. She uses her eGo-C on occasion, but that is usually only right before bed if we vape in the bedroom. When we go out, she has a nice little case that keeps an atty for each of her 2 flavors (mint and mango) and a battery and fits nicely in her purse.