My usual ride starts out with a stretch of Down Hill, then on to level pedaling for a little while,
so I don't even turn things on until I feel like being spoiled, and knowing there are hills coming up.
From then on, I use Auto Mode exclusively. Once in a while I will switch to a specific Assist Level (just to compare), but I inevitably go back to Auto.
It just feels like it works better, to me.
Maybe I will find a reason, in the future, to change, but I haven't found it yet.
Also, I think proper Gear Shifting is beneficial.
That being said, both my Wife & I have found Gear 5 to be a Sweet Spot when in Auto Mode.
We appreciate the LaFree bikes, and their Yamaha motor a lot (at our age mid 60's), because we are wanting that little bit of work the rider must put out to propel these bikes.............. it ain't no scooter.
Craig