I started off directly with DIY liquid kit. What I found is the recipe included with the kit gave me the after "Altoid" sensation. Now I use crushed Menthol crystals and have backed off the menthol to my tastes.
If you happen to have something to cut your liquid with like PG/VG or unflavored nic liquid you can adjust it to your taste. Of course adding these reduces whatever other flavors are present in your
juice.
I get the Menthol sensation that I prefer now without nuking my taste buds and ruining my palette for food, coffee, etc. Menthol has a anesthetic property from what I read which is probably why I like that sensation. But too much yes can kill your taste buds similar to strong mint candies, mouthwash, and breath fresheners.