I had the 40v weed whacker and it worked awesome. I don't have a huge area to do so the battery powered one made sense as ,mixing gas and dealing with ethanol death to engines was a pain in the ass, and 4strokers are way overkill for my needs.
That got stolen when I lent it to my son.
Picked up a combo weed whacjer and blower in 24V at lowes for like $80 when they had a Father Day Sale last year on an implulse buy when I saw it while at the store.
Even though its only 24v, still suits my needs perfectly. Zero complaints.