For what it is worth.....I have purchased several hundreds of the "Bag of LED" deals from Circuit Specialists in the past. Have never had a problem with them. They are standard brightness LEDs and are not like the newer super bright ones that are available today..... but then, I am from the generation where LEDs used to be very expensive.
These have been plenty bright for all of the projects that I have worked on.
If you are using LEDs as a lamp, you certainly need to pay attention to specs on brightness. However, if you just want a standard LED, these are great.