Its all about what you want to use it for & how you want to use it.
With the Netgear you can mirror what is on your T100. With a Roku or a Chromecast, they access the internet themselves, so can be working without needing the T100 at all. They can be controlled from a smartphone, tablet etc.
Forget Amazon Prime directly on the Chromecast though - the only way to stream that to CC is by casting a tab from Chrome browser.
If you want UHD/4k, go for the Fire TV box - that gives you 4k streams of Amazon original series free. Others you'll need to pay for.
The Roku is more flexible if you want a NAS, Plex etc connection.
PLEASE Search for existing threads before posting a new one. Thanks.
Your opinion matters. But should you disagree - please try not to be disagreeable
Mobile OS devices personal pantheon...
ANDROID: Doogee DG310; SGS; Huawei Y300; Motoroloa Xoom 2ME; Razr; Defy Mini; CnM Touchpad II;
Asus TF101; Lenovo A1; Samsung Tab 2 7.0
APPLE: iPhone 4s; iPhone 5c; iPhone 6; iPad 3; iPad Mini 2; iPad Air 2 64gb
CHROMEBOOK: HP 14-Q010sa Celeron 14 Inch 4GB 16GB Chromebook - White.
Rick, loving my T100TA-C1-GR Z3740 64GB Win 10
BIOS 314. All Windows updates except Bing. All Asus Live Updates. WIFI driver 188.8.131.52
I get 8-12 hrs use per charge using SLEEP mode. Warning, NEVER calibrate the touchscreen.
When posting for help, please include Your Model Particulars
Casters T100 Master Help Guide