I use this specific product. It works very well. However, 200 of them all at once may be overdoing it if you are not sure you will like them. I buy at Walmart where they sell in 50 (for $2.98), and 100 packs. The 100 pack regularly sells for $5. which is the same price as this Woot deal (i.e., 2 at $5 each is $10 for 200).
Thanks for saving me this purchase… I will try the 50 pack