Aside from the fact that as a reseller (affiliate) you may be able to get a ‘discount’ or wholesale rate, why would you support your competition? For the most part you should think in terms that indicate you believe your product to be superior and that is why you chose to use it. That you may make a few extra dollars that way is all good.
In addition to possible extra revenue and savings in your business operating budget, using the product yourself will give you the ability to really describe the functionality in your ads. It is so much more convincing to read something written by someone who has actually used the product than just a bland review that may say if you liked it.
You wonder if they even know what the product does or if they were in some way paid to give a favorable rating especially in a ‘check box’ format where you are not allowed comments to qualify your answers. So we are to take the word of someone we don’t know at all, believe they actually used the product and are being 100% honest in their review?
It is important to note here that it is not just reviewers that are not really honest about their experience with the product that are a concern. In addition there are so many haters that may get an evil thrill by saying something negative that may hurt the seller. This can be on purpose or just innocently out of ignorance.
In any case if you have had direct experience you will be able to describe many aspects of the product that otherwise would not be known. The more enthusiastic you can be in your advertising, the better! Always remember to quote any statistics you can find (with the reference source included) that offers proof that your product is superior. This can be a ‘study’ or the results of testing done by a reputable organization.
It also may be important to mention the sales transaction itself as this would be a definite source of satisfaction if it went seamlessly as it should. Stuff happens but you can even learn something when it doesn’t. You can earn your customer’s loyalty by the way you quickly resolve issues.