The SL TL-2 LED 2nd Gen. was one of my very first tactical lights. I still sometimes EDC it for old times sake.
I can only comment on the one TL-2 model that I own. But beam quality is actually very good on mine. Obviously, it doesn't give off a wall of light light my SF L4. But it does out throw my L4. By quite a bit. (Still, the TL-2 can't compete with the dedicated LED Throwers on the market, obviously).
The tint on mine is white. No hint of blue. Perhaps I got lucky in the lottery, but I doubt it.
No artifacts present on mine. There's a hot spot in the center, with good sidespill that is alittle dim.
As mentioned above, it'll out throw an L4. But that might not be saying much. It has a good combination of flood and throw. Just don't expect it to compete with a DBS or even the 2C Lowes Task Force Cree model.
I don't like comparing apples to oranges, and I don't own a P60L. (I'm holding out for the P61L). But a P60 equipped inca will likely out throw it.
Overall: It's a very good light. You can tighten the momentary / twist for constant-on tailcap so that the light comes on with a tiny bit of pressure on the switch, or lossen it just a bit so a long, hard press of the switch is needed to turn the light on. I wish the switch protruded further from the tailcap itself. But that's a minor point. If we're talking $75 for three of them, NIB; that's a sweet deal right there!