For me the light weight is very good as my hands are weak from the carpal tunnel. Even though I have big hands, the fit was comfortable and ergonomic. There are no instructions on how to use each part, but luckily I know my way around power tools. This can be a problem for those who don't. The battery is small and difficult to attach and detach. I'm still not sure about the battery life as I've only used it for a small drilling project. I couldn't pierce a thin piece of metal, which disappointed me. The description says metal can be pierced and the part I tried to drill was very thin but the drill bit couldn't pierce through. That was enough for thin wood and drywall. I look forward to using brush heads and screwdrivers. I will update the review as soon as I do. The carry case with handle is very simple and light but not protective. I'm disappointed that it's not as high quality or powerful as it claims to be. For a beginner learning how to use power tools that don't require a lot of force and using simple projects, I think this should do the trick.