I purchased a couple of Thrunite lights this week. I was so impressed with the performance of the 2A V2 and Thrunite's pricing, I wanted to try some of their other common battery offerings. I bought the T10 and Ti3.
The first thing I noticed about the Ti3 is that it is nearly identical to the Olight i3s in both form and function. The differences are pretty much cosmetic. However, the Ti3 does feel strangely more solid. Perhaps it's the knurling vs the ribbing.
The Ti3's output is impressive for such a small light. It's noticeably brighter on high than the i3s. However, I prefer these lights to default to medium, like the i3s. The Ti3 defaults to low. In my opinion, medium is a much more usable level for many more situations. There are fewer situations that I find myself needing low. A medium, low, high cycle would be better, in my opinion. If you're concerned about too much light in a particular situation, you can easily put your thumb over it and cycle to low. This is all of course a matter of preference, but I find myself using medium and high a lot more than low. Another reason I prefer a default to medium is that I give these lights as gifts. You'd be surprised how many people don't understand the idea of cycling through the different levels by twising the head quicky, or it's combersome for them at best. I can't give the Ti3 as a gift, because low is too low for most people's needs.
The strobe level is a gimmick if you ask me. I'm of the belief that if you're in a situation to use strobe, you want to get to it quicky. Cycling through the sequence a couple of times makes it less usable.
All that said, Thrunite did a nice job with the Ti3. They're really showing what can be achieved with common battery types. I have been moving away from the Li-on batteries, as the technology has been becoming more efficient on simple Eneloop/alkalines. I'll probably stick to giving the i3s as gifts, as I usually find them on sale for about the same price, and people really like the colors. i'm going to keep the Ti3 on my keychain for a while and see if I'm not too bothered by always cycling to a higher level. I really do like the amount of light it puts out on high.