Good price and pretty durable feeling buttons. They have built in resistors on the LEDs so you don't need to add any. I power them from 5vdc and they are a decent brightness, though I'm pretty sure they are meant to be 12vdc, which would make them much brighter. Either way they are bright enough for my needs. I prefer these types with the separate contact block and they have a satisfying click to them. By that I mean they feel solid in their open to closed contact states when sufficient pressure is applied to the button. I've had many crappy buttons before that don't feel right or durable and reliable when they are pressed. I haven't used them enough to note the amount of contact bounce, but I'm sure there is some, which is to be expected. I'm using these with microcontrollers which is where contact bounce would be something that needs to be handled properly. If you were just using these to turn a light on when pressed, and off when released, you would not notice the contact bounce. I debounced them in my code and they work fine. I had some switches very similar to these before and they were junk. The contact blocks didn't nicely or easily pop in and twist lock into place as they should. These, however, do. They go together easily and feel secure