Been up late last few days. Let's try this again, will 1.5ohm perform better for example flavor or vapor or run my battery more etc. And same question for higher ohms. Still getting used to the ohms an wattage stuffs
If your PV is in Watts mode then judging battery life is easy. (Device regulates the volts based on attached addy to give desired watts.) Higher watts = quicker battery drain
If your PV is in Volts mode then it all depends what the attached Addy resist. Amount of volts against addy resistance will give a certain amount of watts. Voltage alone isn't a good judge for battery drain as higher number doesn't always mean more power is being used. All depends on attached addy.
Addy resist = 1.5 ohm
Voltage setting = 4
Makes for 10.67 Watts
Addy resist = 2.5 ohm
Voltage setting = 5
Makes for 10 Watts
So the first example at a lower voltage is draining the battery quicker because the wattage is higher. If using Voltage mode then knowing your attached addy resist is important and also Ohm law calc your friend
Also. Generally lower resist like 1.5ohm coils generally respond (heat up) quicker but not always if dual coil.
As far as Volts/Watts sweet spot is all depends on how you like your vape. Also type of Addy and juice plays a big role on how hot you can go. As others have mentioned. Try the lower 8-10 watts and then go up gradually.
Hope that helps.