rlichter
Newly Enlightened
The v10r ti+ is 6mm longer, roughly 1/4 inch. That's basically the tail switch.
1. ti+, just a little longer but you can a simple ui and you need to change grip to turn on/off and adjust brightness.
2. m11r ti, just a little shorter but you don't get infinite variable control. you don't get to set the brightness before turning on. ugly ui is up to anybody's taste. get the 1st 800 with free spike so when you can't figure out the ui without the manual, you can use the spike to take it out on something, but make sure you don't play with the light on top of a glass table and accidentally drop the light at the right angle.
3. ti+, you really need an IMR battery to take full advantage of the high brightness but any protected 16340 should get you way over 300lms anyway.
4. there maybe a different tint between the ti+ and m11r ti.
Keep in mind if you EDC a light, beyond a certain point (depending on the size of your hand), smaller size can make a light harder to hold and operate at the same time.
The guy who did the YouTube video on the M11r Sirius (only video I've found so far) owns both the V10r Ti+ and the Sirius and he said the latter has much longer run times. In moonlight mode, it's 35 hours versus 30 days. According to an email response I had from Sunwayman, the infinitely variable brightness circuit is responsible for the additional current draw. (I think; the English was not very good, though incomparably better than my Chinese.)