PLR (private label rights) have overtaken master resell rights (MMR). And there are good reasons for this. This is because there are definite advantages in buying private label rights (PLR).
You see you as the seller of the master resell rights product got a benefit in that for the sale you could keep 100% of the profit. The big disadvantage to you was that you were unable to change anything. You continued to sell someone else's product along with many other resellers. Each time you sold another copy, you were distributing the links the author had placed in the software.
In fact the biggest beneficiary to your sales was not you, even though you could keep 100% of the profit. The author was the biggest winner. The reason is that each time you sell another master resell rights product you are passing on the links the author has placed into the software. These links represent future sales to products and services from which the author benefits.
With private label rights you can now become the author! You are now able to include your own viral links into your products.
You can even make the product look new. PLR material often comes with graphic files that can be edited. So not only can you change a few things to make it newer. You can also give it a fresh new look.
As you can see, there are many advantages with private label rights software. You have a far greater potential of creating that income you desire.
One of the things you can do with private label rights is to purchase u number of products in the same niche. Products that are related in content. With these you are now able to pick pieces out of each of them. Do a little research on the internet to make sure the material is relevant and up to date. After this you can tie the pieces together and create a brand new information product.
It is important to check the license that you get with your PLR goods. The best is to try to get unrestricted Private Label Rights. This means you can do anything you like with it.
In summary: PLR will end up far more profitable for you. You have the freedom to make it viral. This means that it can create a residual income for you. Master resell rights can't do this.