well ive read many posts on how everyone loves edgit. I have a stick edger, but some say the edgit is better than a stick edger. sooo... what EXACTLY is it? can i still trim with it around obsticals? is it plastic + the string? a website? is it really better than a stick edger, i can see how it save time by not having to go back to the truck but does it do a better job with edging? thanks!