As others have already said, your choice of juice will be THE MOST important decision you will make when it comes to you staying off of analogs. When I first started vaping I was completely suspicious of wether or not e cigs were the real deal or just another scam trying to take my money. Luckily for me, I began when there were actually "free" sample kits that you could call in to the customer service and quit their program and still keep the entire kit (and I'm sure I'm not the only one who did it). The other thing I did was not pidgeon hole myself into "having to quit or I fail" and that helped me keep that type of pressure off of me.
Within 4 or 5 months I was happy with what I was using (a 510 auto battery and atty w/cartridge), but saw plenty of youtube videos with people blowing massive amounts of vapor and wanted mine to perform the same. To begin my quest for vapor supremacy I actually bought an eGo-T kit. While the eGo-T was a slight improvement over the 510 and held way more juice onboard, both flavor and TH were severely lacking still. Even on a good day and because I'm a tinkerer I was able to coax a little more vapor, but well short of the mark.
I'm gonna skip past most of the stages I went because its more of the same type of deal. (eGo-W, Ceramic Cartos, Horizontal Cartos, CE2's, CE3 Smokeymizer, LR 510 Dripper, HV 510 Dripper,....etc.)
Finally after all of the experimentation I boiled down to all the equipment that I liked for my style of vaping (eGo-T 1000mah batteries, eGo-C Twist VV batteries, VV Box Mod 3.0v-7.2v, 900mah Ultrafire batteries, Smoktec 1.5ohm Single Coil Cartomizer, Smoktec LR Dual Coil Cartomizer, Phoenix Bottom Coils, and eGo Bottom Coils) Notice in all that I listed there's no mention of a device that's in the $125+ range? That's because I found a way to get all of the flexability of variable voltage without buying a Provari or Lava Tube or anything like those APV's. Trust me, it's surlely not that I don't want one, but more so that I can't afford one right now. Even with the perfect setup, I still felt that there was something that I couldn't put my finer on missing from my vaping experience.
One day an order that I placed arrived in my mail. Just like every other vaper, I rushed to fill my equipment with my brand new flavors, took a drag, and I swear I heard music playing! Like the most incredible dream come true, the one thing that I felt was lacking from my juice suddenly was there! I quickly filled more of my cartos/attys/clearo's with the other flavors in my order, praying that what I got wasn"t a fluke, and was pleasantly suprised when they all too had that spcial something. That missing something was complete and utter satisfaction. While the best setup with the best hardware no matter if its dirt cheap or overly expensive can lead you towards great vaping, low quality or badly mixed juice will fail you every time. If you focus on your juice first, then work to bring out the best qualities in it, your efforts may pay off with a little less work.