It's true that you don't want to invest in too many cordless tool brands since the cost of batteries can pile up, but I've personally found that it's good to have a primary quality brand and a cheap backup brand. I buy DeWalt tools when I think I will use a product frequently or for important projects, (drills, impact drivers, saws, nail guns, power sanders, etc.). I buy Bauer tools when I think I will only use something a few times a year or when I don't feel like I don't need top-tier build quality. I have a cordless Bauer fan, light, leaf blower, string trimmer, pressure washer, and an inflator that I use for pool floaties. These tools are very inexpensive and Harbor Freight frequently has seasonal deals where you can get a tool for free when you buy one of its battery and charger sets or vice versa.

In my experience, Bauer tools are adequate for simple tasks, if a bit unimpressive when it comes to heavy workloads. They certainly do their job well enough that it's hard to complain given the price. There is also a fairly wide variety of Bauer products, so you have a large selection of tools to choose from. That said, there are certainly several higher-quality tools available.