I use a Husqvarna 325L trimmer which at 9lbs was the lightest trimmer on the market when I bought it 7 or 8 years ago. I love it. the husquvarna head is so easy and the thing is very well balanced. It always starts on second pull and even though every cosmetic part has broken, I've been through 3 trimmer heads, and the shaft is bent it still runs great.
too much stuff