BTW - I only bought the Tank on a whim as I actually wanted an i3 Eos as I had bought one for a friend recently.
In reality I think the Tank is a better light. The fit & finish is certainly as good and it doesn’t appear budget at all.
The threads are lovely and smooth and very easy to operate one handed, even for me being a lefty. It’s also brighter than the Eos is.
Lastly I love the beam profile. Nice tightish hot spot with massive throw and extremely wide spill. The Eos has a MOP reflector and a smoother beam, I think I’d prefer the Eos for map reading or similar, but the throw of the Tank makes it much better if you are outside.
Anyhow, on a different note, have you seen this: BLF Edition ThruNite Saber 1A Group Buy - $19.99
A BLF branded group buy. Ok its an AA not AAA so will be a bit bigger. But at $20 it might be worth a punt.