Now, I don't have the Tiani, but I did just finish writing my DR on the Noa. I am comparing my experience with the Noa to the Tiani reviews I've read.
From what I can tell, the differences are (besides the obvious price difference):
- Noa only comes with 1 attachment, while Tiani comes with 2
- Noa comes with a USB charger, while Tiani comes with an AC/DC charger
- Noa does not come with a remote, while Tiani does
- Noa seems to be just a bit less powerful than Tiani
On the plus side, Noa is compatible with other plug-in Lelo chargers, and is compatible with the Sense Motion remote (all functions work with it, including the SenseMotion modes).