You can go very low on ohms if you want. I know some have made coils at lower than .1. I like a 1.2 - 1.6 ohm. It is a hotter vape.
The 1.0 to 2.0 range is good.
Experimenting is great with coils. So easy to make and you can try all different ohms. Your juices will taste a little different with each ohm.
I do mostly sweet flavors with some tobacco added at times. So far I have not found the lower ohm coils to effect the flavor in a bad way.