My daughter and I started with Blu disposables, then moved on to Blu starter kits back in late 2011 or early 2012. The Blu cartomizers were refillable at that time - if you could find the right information. Try YouTube to see if they have information on refillng Blu cartos. As I recall, it was a bit of a PITA, so we kept buying pre-filled cartos. After a few months, we got really tired of quality control issues - out of a pack of 5 cartos, we were lucky to get 3 that actually worked. This was around the time that Blu was selling out to Lorillard. We invested in different cigalike starter kits - 808 - that were easy to refill with premade eliquids or even DIY eliquds. We were happy with those, but they still did not last as long as we would have liked, especially for my daughter when she was at work. After I found out about and joined ECF, I saw many positive reviews for Evod systems - this was in mid to late 2012. We saved, and eventually got ourselves a couple of Evod starter kits, with Protanks to use with "tank cracker" eliquids. We moved on from the Protanks to Evod Glass tanks, which we preferred.
You may want to look into an 808 cigalike setup if you are set on something that looks similar to a cigarette. On the other hand, Evods and Evod 2s are a bit bigger, around the size of a cigar, but perform much better as far as battery life. You will need to purchase coils and eliquid, but we found them much more satisfying than the cigalikes. If you decide to go with an Evod or Evod 2 setup, I would also recommend getting an Evod Glass or Protank, since the Evod and Evod 2 kits come with plastic tanks that can react to certain flavorings, most notably citrus and cinnamon, and can melt or otherwise self-destruct. My daughter learned the hard way why I ordered Protanks for both of us when we switched from cigalikes to Evods - she filled her plastic Evod tank with a Wild Cherry eliquid that was listed as a tank cracker on the vendor website (she did not notice it) just before leaving work to come home. By the time she arrived home, 30 minutes later, she had Wild Cherry eliquid all over her car, and a melted tank. Lesson learned. Listen to Mom.
At this point, we have graduated from Evods. My daughter is using a Provari with a Nautilus or Nautilus Mini tank - still fairly discrete, still a satisfying and relatively inexpensive vape. She prefers tube mods. I happen to like box mods. I use my trusty CoolFire IV with Nautilus Mini tanks. Satisfying, pleasurable.
Whatever you decide on, relax. Enjoy. Play with your vape. Good luck finding something that you like and will satisfy you. There are still plenty of options available.