Everyone I have talked to at Tesla said to set your charge limit to 90% for daily use and there is no problem if you run the battery down to 10%.Based on what I am reading on this forum, supercharger use is hard on the battery if used regularly and especially if you charge to 100%. At least that is what the SA told me on a Model 3 test drive in Palm Desert this week.
I live in a Canadian city that sees -35C weather occasionally and -20C regularly during December to late February. I've read that cold temperature can cut range by 40%. So, for an M3 with LR battery (AWD), 500km range (300 miles) becomes 300 KMs (180 miles) at cold temps. But, wait; if you want the lowest rate of battery degradation Tesla recommends charging to 80% and recharging at 20% range remaining. So the range from 300 KMs becomes 240 kms (144 miles), and that is to zero range. If you follow the 20% range remaining as the point to recharge, you have a usable 180kms (108 miles).
I would agree that the long range battery is better in many ways, but there is no need to limit yourself to to 80% and 20% state of charge.