I was reluctant to switch over to electric, but am pretty happy with my purchase. First, get a battery adapter to adapt your current 20v power tool batteries to the Worx trimmer, blower, etc. I own Dewalt, so I purchased an adapter here for $20. That way you save some money not having to buy the Worx batteries. 2nd, don't expect it to cut like your old gas trimmer. It doesn't have the grunt that a gasser has, so if you have really overgrown edges you will have to slow down and let it cut at it's own speed. If your edges are trimmed weekly, it will handle it with ease. I'm an aggressive trimmer lol, and I had to learn to slow down and let it do its job. It cuts way smoother than my gas trimmer, and leaves a nice clean swath. It's more controllable than traditional ones, but take the time to adjust the head and handle angle to suit your needs, trust me on this one it'll save you some headache. Downside is my fingers get fatigued from holding the trigger down. Not sure why it's any different from holding the throttle on my old one, but I noticed it. Now the question everybody wants the answer to, battery life was great with a 20v 4ah. I basically have 3 yards, front, side, and back. With the back having extensive trimming needs. The 4ah battery lasted for all 3 and had one and a half bars out of 3 left. I was impressed. No noticeable drop in performance towards the end either. I also tried a cheap no name brand 20v 4ah battery with the same results. So it'll take whatever you give it. As for Quality, it feels like it should last a while. It's fairly light, and balanced ok. Line spools are very small, so I was worried about that, but I used way less line than I would have with my gas trimmer. Actually, I did all 3 yards without having to change spools. Oh yeah, get the pack of 6 or 8 extra spools, you won't regret the $12 investment. Overall, I'm happy with it and would buy again. Just remember to give it a few times of use so you can adjust to it.