I tried more e-liquids than I care to admit, including from local places that do custom flavors. They all either clogged my coils very quickly, had very little flavor or worse left me with a nasty after-taste. Finding the right mix of (nicotine MG) and PG / VG% is what was key. Currently, I purchase Eon Smoke Grape Mint from local stores when available (24mg nicotine, I find gives me a stronger hit/better flavor than lower nicotine). However, I do not like ordering Eon Smoke directly through a webstore, I have a very good reason for not wanting to do this but I will skip over that for now. I have ordered from Mt. Baker Vapor as they always have someone available to take my order and they are very helpful. However, it took a few tries before finding the best Mt. Baker Vapor e-Juice mix that works with my vaporizer. I use Mt. Baker Grape or Spearmint flavor (24mg of Nicotine) with 65% PG and 35% VG, this works great. My vaporizer is Kanger-Tech EVOD starter kit 2.2 ohm (single coil). The 2.2 ohm gives off the best flavor and doesn't burn out quickly. I have also tried many vaporizers, but the ones with larger tanks I do not like - they are less portable and the eJuice tends to get stale. I carry multiple EVODs in a small case, its a better option for me than the larger vaporizers.