Budget is always a factor. I have many of the APV's mentioned and like the quality, look, features, durability of the Sigelei V3/5. Nice telescoping Mod. The truth is that most of the APV's under $100 use the same 33.3 chip, have the same functions and the differences are in quality and appearance. Personally, I found little difference in the number of buttons, etc. They all are easy and all have to be learned. The Vamo V3 in stainless is perhaps the best valued APV, and perhaps the best entry level APV. Also, the Innokin's .and Sigelei's are nice. The MVP 2 is gaining some nice traction lately, since they added an Ohm meter and better threading. My top 4 recommendations, which also have different applications, would probably be:
1. Sigelie V3/5
2. MVP V2
3. Vamo V3 in Stainless
4. iTaste 3.0
These are all nice APV's and would be on my short list. Happy hunting, good luck on your VapeQuest, power up and vape on!