One of my dislikes about using private label articles is that once you've used the content you originally get, you can sometimes find yourself a bit stuck.
You either have to get some of your own new articles ghostwritten, or write them yourself. If you are short on time, this often leads to your content site staying dormant with no new content being added.
That's why I love to see PLR article services that focus around one specific niche, and provide you with on-going content for that market. Wendy Wood's new PLR Food Content membership provides you with just that.