Thank you all for your great imput!
I usually don't do extreme (deep) caving exploration, the caves i usually visit are just passages (think about a long tunnel) to get to remote waterfalls, beautiful landscapes and such... But they are VERY dark, moist and with lots of wet spots(creeks, pounds) some are deep, requiring waterproof gear.
I already have a headlamp (Inova 24/7 with headband adapter) which serves me very well with good runtime and multi-level brightness. I really don't think i need specific spelunking gear, since i don't go into deep and unknown caves. The rest of my outdoor camping gear is adequate for most adventures in the wilderness, well, except fot those Everest excursions.
Therefore, i'm only looking for a good compact EDC and a backup, i already have fantastic primary lights, though they are heavy and all incans.
P.S - I'm also into cave diving, but that's a whole different subject. Now this is really something dangerous if you are not qualified to it.