Only been using the sc53w for a day/night/early morning and i am liking it. Its certainly more compact in size/feel over the sc5c mkII i have. The 4500k (80+)is not as towards yellow as the 4000k (93-95).
Few random pics
As i tend to prefer the 16340 format, the sc5c mkII i do like being a little chunky, just kind of feels more natural or comfy in hand. The more compact sc53w does feel tiny for me, not only is it a little shorter but even more noticeable in the thinner body. Both lights i like, the 4000k is better used outdoors i am finding(presume a combination of house lighting and wall paper colour makes the "tint" worse than it actually is. This is a variable and does change from not pleasant to nice depending on room! Its sounds crazy and probably is, just from findings over time. Now the 4500k seems a little more house friendly so far, looks ok to nice in and around the house. I will EDC the sc53w in my coat (when i dig it out)and keep the sc5c mkII for now in my fleece jacket.
As with all potential EDC rotation candidates, i like to use them pretty much around the clock to get use to them and see if suitable!. Both ZL's are ample bright enough, both H1's on mine are set bellow their max levels(guess around 100-150lm type levels). Press hold for low and these are set at single figure lumens(not sub) for in the night/early morning stair descending ...............i need to see the stairs well enough with tired eyes.
Some AA lights...................who would have thought they are all fed on an AA cell(eneloop other than the lumapower which is 14500)
The ZL are my fav AA by far! and AA fuel is not really my preferred fuel................but i like options/variety