In the beginning, I vaped flavor and lots of it. Quit smoking, though so
goooooal!
The strong, cloying flavorings in commercial liquids caused me to seek a respite in the form of unflavored. I chose Max VG as I enjoyed the natural sweetness of the base. I ended up vaping unflavored nic liquid for a couple of years. Logically, in 2016, buying pre-mixed (if you're using nic at all) in the percentage or (your) choice is the simplest and easiest method to find what appeals to the most important person: you.
Since you asked for recommendations, here ya go, but the same fanboys who skewed the poll on the topics are already lining up to flame; I feel da heat.
In my personal and most humble opinion, MFS will be the harshest choice, albeit one of the cheapest. At the other end of the spectrum (where the qualities will be clean, clear, smooth, low-odor and free of peppery quality) will be NicSelect and Chemnovatic.
The former (NicSelect) is available from a few vendors, my favorite of those (and, to my limited knowledge, most economical) is Nicotine River. I didn't research smaller sizes of lower nic percentages cause here's a gold mine and you want me to dig it out for you, too? OK, maybe not gold, but good stuff here, I promise. Never mind, I checked: 3, 6, 9, and 12 mg bottles start and just over $3.
Chemnovatic, distributed through the UK (although the chain from the actual extractors is convoluted [thank you, Time]), can be purchased from Vapers Tek. It was also available through Bull City Vapor (and got raves) until North Carolina dropped the hammer on nic sales.This stuff is spendy but the quality is so good, many people (this writer included) find the lower-priced 'Throat Hit' product smoother than many supposed first-quality products. The smallest bottle premium nic available here is 120ml which will set you back a double sawski ($20). More on the 'Throat Hit' product below.
OK, I figure the only folks still reading by now are either huge fans of this inimitable writing style or gluttons for eyeball punishment so hey, how 'bout those <fill in winning Super Bowl team here. I honestly have no idea>?
Once you have a fave, the most economical way to buy (for the home DIYer, anyway) is one-liter, 100mg containers. At Nicotine River, the cost is $60, a bargain for the quality. At Vapers Tek, it's $125 which is not a bargain but is the highest quality this vaper has ever sucked upon. The real bargain here is the one mentioned previously, the so-called 'Throat Hit,' a 100ml bottle of which can be funded by couch-cushion change-diving or busting into the kids' piggy bank; it's $25.
OK, that's all I know and then some and I'm out of breath. If you have questions ask somebody else. No, seriously, there are smart, experienced DIYers here, not all of whom have defected or you are sincerely welcome to shoot me a PM if you haven't had enough of this rambling. 'Always happy to lend a hand.