I know I said it and I will say it again that if you can afford it nothing beats the PS3 for streaming Netflix. I use to think that the Roku was good but lately now for three weeks now during peak hours I have been getting poor PQ with HD content with Netflix but the PS3 has no problems. I don't know about other devices though as all I stream is Netflix so I am sorry I can't help you out with that.
EDIT: Sorry I did not fully read your topic. You already have a PS3. My bad.
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My Router: Netgear R7000 - Advanced Tomato 3.4-138 K26ARM USB VPN-64K.
My Primary Streaming Devices: Fire TV Box (2nd Gen), Roku Premier (2016).
Cats are the best pets.