Best RAID for home use

What is the best RAID for a home user? There are plenty of options out there and a lot of confusion the way I see it. Most people at home just need to make sure that their precious data is safe. They go online and get bombarded with a lot of marketing fluff from companies who make crazy expensive and quite limiting devices like NAS. Some other look further and get stuck on actual RAID hardware that they install into their computers. But all of this is just a bit too much in my opinion.