i'll take your word for it. i've not dug deeper than reviews. but would like to shed some weight from my M8, b4 it's mounted.
what attributes would you favor for this type of line? or are you comfortable recommending 1 over others?
I'm always comfortable with TRE. You are looking for the correct length first and foremost. Just because it is synthetic doesn't mean it can't stack up on a side pull and damage the rope or blow the winch up. Winch lines are generally based around 5/16" diameter for capacity. Warn has overlooked that when you move to 3/8", you have to change the length or the drum winds up too full with no margin for a side pull.
You don't want any sleeve or sliding "abrasion" guard. They bunch up, aren't abrasion guards, and they add bulk which reduces capacity.
You want the typical 12 strand braid. It has a good hand, isn't too soft and floppy, isn't too stiff and unwieldy.
Typically the higher strength rated versions of the Dyneema fiber are more than ample for our uses.
Avoid the stamped sheet metal thimbles. They collapse under load and subject the eye of the rope to bending loads that violate the minimum radius rules for full strength.
If you aren't going to use the Safety Thimble with the radiused eye for soft shackles, then get a heavy duty tube thimble for the hook or just run it by itself with a soft shackle.
Don't worry about the attachment to the drum. Most get confused over what that does which is nothing more than hold the end until the wraps on the drum provide enough friction to pull against. The anchor does not do that except on the later Warn drums.
Just wish I could justify paying almost 400 bucks for it. LOL I better stick with something on the cheaper side. 
