That will depend on what type (flavor/ratio) juice you're vaping.....it's always best to start LOW and work UP to see what the "sweet spot is....FOR YOU!!! YOUR favorite "spot" may NOT be right for someone else.....
Vaping is ALL ABOUT YOU!! What works for others may NOT for YOU!!!
Ideas/instructions on proper builds/safety/technique are here at ECF....at your fingertips!! But variables like voltage and wattage come with "hands-on" experience.....Try various settings and see what works best.....FOR YOU!!
BTW.....the MVP v2 will do you well for a LONG time!! Battery life is outstanding and it's built like a tank!!

Happy (vaping) Trails!