The Rival 110 improves on the Rival 100 where it was needed most: the sensor. For the in game tests, it's an excellent performance. The quality is still a bit lower than the Rival 310 and Sensei, but it's still good and it's cheaper too.
On the note of upgrading from the Rival 100, you can still play fairly well with it so it's not a must to upgrade, but for the sake of having the right DPI, I would sell the Rival 100 and buy the Rival 110.
I recommend looking at the size when deciding on your purchase, but even with the Rival 110 being a bit too big for me, I had some great games with it, so I'd use it over the Sensei 310.
If you'd like to help support the channel, you can buy directly from SteelSeries with my link:
Rocket Jump Ninja | SteelSeries http://steelseries.7eer.net/c/223206/207058/2390
And you can also buy using my Amazon Affiliate links here:
AMAZON USA: http://amzn.to/2ypBYGY
AMAZON UK: http://amzn.to/2yjxpPs
For Australia, check if it's available here: https://www.mwave.com.au/searchresult?w=rival+110
_____________________________________
Patreon: https://www.patreon.com/RocketJumpNinja
Twitch Streaming: https://www.twitch.tv/rocketjumpninja
Website: http://www.rocketjumpninja.com
Discord: https://discord.gg/BvFCAVy
Rocket Jump Ninja 1070: https://www.mwave.com.au/product/rocket-jump-ninja-1070-gaming-pc-ab87577
Audio equipment provided by Audio-Technica Australia http://audio-technica.com.au/