Compared to the cost of other shielded connectors, these do a fine job.
It would be nice if the plug's metal shield had a little crimpable tab that the braided drain wire could be fastened into, rather than hoping the it gets clamped between the cable jacket and the plug shield I'm sure that would increase the price, though maybe still less than the competition.
PROS: I've had no issues when using my regular crimper on these plugs. So far no problems with the cables I've made up using them.
CONS: They can be a little touchy to insert into the jack (need to align them carefully), but that's been my experience with other brands of shielded plugs as well.
These are actually the only ones I have ever used and I get a good, tight connection. Our school has saved a lot of money running our own cables and making them- with everything from tools to wire coming from monoprice.
PROS: These are great. The price is great and I haven't had any trouble with them.
To be honest, I am not completely sure how shielded twisted pair and ends work. I suppose I could attach the grouding wire in the STP to the jacket of these plugs. I am also told that I am not to ground both ends.
If these work like normal ends on UTP then I am extra happy, so far they do work just fine for everything I have used them for.
PROS: Shiny, solid, Works!
CONS: Not really a con but when you have to inspect that your wires are touching all the way to the end, you can't see them.
Compared to ends that cost upwards to $.40/piece, there is absolutely no difference. I've actually swapped them for my installers and they never noticed the difference. You can see the cables pairs very easy, especially looking at the tip to make sure every pair is pushed in all the way. Excellent value for your money.