@ Neutralwhite,
I have a limited knowledge about Surefire but can say a few things about how I see it that might be of interest.
Surefire makes tactical lights
That means (IMHO) reliable, easy to use lights. In most cases single mode or 2-mode. No advanced UI's that you might do wrong with under stress.
It's no beauty contest regarding tint. The light is bright enough and balanced to runtime.
From what I have read in other threads I have understood that you like neutral white and want other lights with similar tints.
Therefor I think it's a good idea to do as others have said and get a P60 light and a dropin like M61W or something else nice.
I myself also like neutral white but have some cool white lights that I like also (tintwise).
My G2x pro is one of them.
If I compare it directly to, let's say, the M61WL that I have it doesn't look that pretty.
But if I just grab the light and go out and only use that light I would say that it has a white neutral(ish) beam.
Another thing to consider is the UI and number of levels.
The simple and great tactical single mode UI of the 6P isn't very great if you are looking for an EDC light with low, medium and high, right?
There are multimode dropins if you want that in neutral white I think (Vinh?).
If you want to run 18650 you have to bore it but 17670 works stock.
What do I have:
6P with M61WL with 17670 - super cool classic, feels like real quality. Very nice tint / beam.
C2 with Lumens Factory dropin, throwy, nice tint, maybe 5000-5500 K. Runs on 17670 (single cell only!). Also a classic.
G2x pro, tint as above. Good beam profile. 2 useful levels.
E2DL, my only TIR light. Runs on primaries. I think the TIR lens works great for +10 m distance but if you want to light up things or the ground closer in front of you I think a reflector light is better.
They don't get that much use by me beacuse I have 1xAAA in my jeans pocket, maybe ZL in my jacket and some Fenix and others spread out.
But when I use them they just give a nice, warm feeling.