Start by gaining some understanding of RAID.
There are advantages, disadvantages, and trade-offs.
There are also many tutorials and explanations available online.
For example:
http://searchstorage.techtarget.com/definition/RAID
Once you have more of an understanding then match your storage requirements to the appropriate RAID scheme if and as necessary.
For the most part my belief is that home RAID drives only add complexity and more room for error. Especially if the end user is not well-versed in RAID and how setting up RAID will be an actual benefit to them. Need to go beyond the "buzzword"....
Do not do RAID for its own sake. Do RAID (and the correct RAID) if there is a specific known requirement to do so.