To stream netflix, 10/100 Mbps is fast enough because the traffic from your ISP (such as Xfinity/Comcast or AT&T Uverse) will only go as high as 20-25Mbps for down stream and up stream is much much less.
The Gigabit speed is only needed between PC to PC on your local network. For example streaming or transferring a file from one PC to the other or to the TV.
For example, I have the cable/dsl modem connected to my wireless router. Then the router is connected to the giga switch, with other PCs connected to the giga switch as well. That way, all my PC will be on the giga and can transfer or stream at speeds higher than 100 Mbps.
If you are going to buy a new switch the costs are not that much different. Get the 10/100/1000 for present and future use. In the cyber world everything is new for one day. Tomorrow morning there might be a need for 10/100/1000/T bps.
The short answer is either one will work since both are faster than your internet connection anyway. The long (correct) answer is that it depends on the amount of traffic on your network. For a handful of simultaneous users, 10/100 is fine. For more than a half dozen or so, you'll notice an improvement with Gigabit. Since Gigabit device prices are falling, you're probably better off buying one now and having plenty of room to grow. Of course, your devices will also need to have Gigabit-capable NICs to benefit from the speed boost, but the switch will still work more efficiently.
Thanks arrowhead, That's what I thought-from the few posts I could find -I already ordered a TRENDnet 10/100, 8 port switch, as I now need more ports to connect a new BD player by wire for updating its firmware. The 25 Mbps when streaming was mentioned in a few reviews of the switch. Thanks for confirming.
Sometimes the extra ports come in handy when you expand, and the extra headroom provided by a solid gigabit switch keeps clogs away when running in heavy traffic from multiple sources. This switch is cheap enough to take care of needs like yours and most reasonable future expansions while still being a solid piece of equipment. Also, if you have computers with gigabit ethernet and want to add a network storage drive or server with gigabit, you will save a huge amount of time on file transfers vs a 10/100 switch.