Hi, welcome to Vapor Talk.
Both the Vaporesso and Caliburn units are good ones, it's hard to say which is "best" because it all depends on what works for you and what you like. Try the one that "you" think might be better for you.
If you're not into throat hit, I'd go for something with more VG (vegetable glycerin) than PG (propylene glycol) in the mix. Also, more nicotine will give you a harsher throat hit. My preference was 60 VG/40 PG, but you might like more VG. The bakery flavors and non-citrus types of flavors might be to your liking.
Overall, the number one tip I would give is to be patient while you're trying new things. Read through the threads on this forum, the comments from others are very enlightening. Most of all, have fun on your journey away from cigarettes!