Not a recommendation exactly, but I use the Ryobi 18V range. The good part is that the mower, whipper snipper, etc are cheap, but the real win is that the batteries can be shared. This means I feel like the investment in the batteries is worth it, even as they age out. Ryobi batteries are also pretty good. Really wish a larger company like, say, Makita, had a shared battery system as large as Ryobi.
EDIT: Yep Makita do now. Nice.
So I have been asking myself why I held some of my beliefs, and the answer is that I "learnt" them at a really young age, maybe 4-10 years old. It was an age where I basically knew "nothing" and I guess I filed it away for clarification later and that "later" never came. All of a sudden I'm much, much older and asking myself why I even believe this strange thing and the answer is "they got me when I was young". If I wasn't exposed to other thinkers who asked me to re-evaluate my ideas, I might never have questioned them.