Staying away from the latest Strion model.
At least until SL corrects the teething issues with it.
One little detail to keep in mind if it's a 2020 vs DS-HL decision for some buyers is subjective, but could be a priority for some.
If you're primarily an under-hand / garden hose grip, side switch user, with the 2020 you'll have a fantastic way of setting / changing the output level; maybe the best I've ever seen / used in most respects (based on my Stinger 2020 experience).
If, however you're primarily an over-hand / ice pick grip, tail switch user (as I am), you'll have to change your grip to change output level (unless you use a second hand, which I usually don't have and thus don't want required), because w/ the 2020, that cannot be done with the tail switch (AFAIK).
This is the best excuse I've had to stick with the DS-HL.