I bought these because the two other brands I normally use were out of stock, and I have been pleasantly surprised. They work just as well for me as the other brands, but I got a much larger quantity for a better price.
The main difference for me is that I take two of these instead of the one tablet I normally take with the other products. Even with that difference, the 100-count bottle should last me significantly longer than what I usually buy, so I still feel like I'm getting a very good value for the money.
I'm glad I decided to try these instead of waiting for my usual brands to come back in stock. Based on my experience so far, I would definitely purchase them again.