I like the security envelopes since I mail out important mail. I feel more secure with these envelopes than other store brands. They really do the job in securing what is inside. They were also a great bargain for the amount. I really would recommend these envelopes.
I like the easy close envelopes because they seal tightly enough without having to lick them and they are non-see-through which makes them more private. The only complaint I might have is that if you need to use very many sheets they are a little more difficult to get the folded pages into the envelope because of the narrow edge at the sides at the top of the opening. However I like the envelopes themselves and the reasonable price well enough that this little feature does not bother me that much and I have learned how to accomplish the task.
We have tried a number of different envelopes to run through the printer for addressing but have been very disappointed in the weight and quality of many of the lower priced types. However many of the heavier ones hurt our budget. After several trial runs we found that these work well in our Brother laser printer without wrinkling-up. They also look more business like than some of the less expensive ones and though aren't security envelopes do not show through as easily either. The self-closing feature made stuffing and preparing for a mail-out much quicker.