It just depends, individual pieces of equipment could be very good but the brand might not have very many like that.
My Dad's job as an electronics salesman for Montgomery Ward meant that we got access to a lot of questionable stuff. However,for Christmas in 1972 I got a portable cassette recorder that did not look like anything special until, being the curious teen I was, I opened it. Inside most nearly everything mechanical was stamped with "Pioneer". The recorder itself lasted until the early 2000's when it's motor finally died while my second son was using it. It still worked fine up until then.
So, some brands may have a reputation of low quality but you should judge equipment on it's own merit.
Mark Gosdin