A lot of audio companies have had major shifts over the years. Many have been bought out by "junk" audio companies as a way to use to the recognized brand to push their cheap equipment. No matter what you buy, cheap brand good brand competition brand, always try to run a google search and see what people are complaining about. You may still want to go with your preferred or budget friendly brand but then you can beware of certain issues and models you may want to avoid. Unless you're on a strict budget a lot of times it's good to avoid the "lowest" level of a brand's offerings, just because they don't spend a lot of time in development for that price point. Pioneer is a perfect example of this...they have their "Wal mart" selection but then every year they sponsor a build competition with their higher level equipment.
What kind of head unit are you using? You may need to adjust the settings to make the pioneers sound better.