Quark AA2 is dead. Replace with???

Bought this in 2010 from Going Gear. Been a great light and I need something similar. Two double A's/water and sweat resistant/take abuse ect. Like the different modes and being able to program 2 of them.
1. Should I stick with 4Sevens? There are so many choices now.
2. Should I send this one back to Tucker,GA because of the 10 year warranty?
3. Is there a better flashlight sheath than the Maxpedition 5 inch??
4. I need to identify wire colors in dark close places. Is cool white the only choice now?

Thanks guys in advance.

Send it off for warranty. You can still buy a new one for the sake of it, but why not also get it fixed for free?

Would a headlamp be more useful in those spaces?

might just be a broken switch. contact foursevens first

then get a flashlight with a Nichia 219 LED. great for colors

The Fenix E12 and LD09 are similar to the Quark, great single aa lights. Biggest difference, no clip on the E12. The LD09 has a clip.

Have you tried bypassing the clicky (w/ tail cap off, touch neg batt terminal to tube edge)? Could just need tightening of the clicky retaining ring.. or clip collar. Otherwise, definitely have them repair it - you paid for the warranty.

Thanks for the suggestions men. I did bypass the clicky and it still wont light up.
A headlamp would only be good in very few situations, we have a magnetic multi-LED for those times. I like having that size of light so I will look into the Fenix.
Is the Nichia 219 a neutral light? I think when I bought the Quark I got the neutral LED.
I will send it off and order another.
I have the MMX Maelstrom but it is a bit too large to carry around all day on the belt.