League of Legends (LoL) Question: Jungle Question (Madred and Lanter)

Honestly, I never finish Madred's Razors on junglers who get Wriggle's Lantern UNLESS I am behind as most junglers either have fast clears or in-built sustain from their kit.

Junglers mainly get Wriggle's Lantern for buff control and faster jungling because the passive gives you 200 more damage than the passive on madred's razor.

However, upgrading Madred's Razors costs you an additional 900 gold which could go to a kindle gem, which gives you health and cdr - more useful than some 10% life-steal and armor as stacking health is the new meta due to armor pen and magic pen changes shredding resistances, apparently.

Champions who benefit greatly from the early life steal love Wriggle's Lantern. Examples include Xin Zhao, Lee Sin, and Master Yi. Super item dependent junglers like Kha'Zix may just get the madred's for the speed, and go on with their items, but even then it may be a good idea just to get the Wriggles.

Personally I play Volibear and I buy the madreds alone to speed his bear *** up, and he doesn't exactly need the lifesteal from the Wriggles.

if they have a lot of bruisers wriggles is a really nice upgrade .

Buy Wriggles when you are in need of sustain from your auto attacks, or are in need of free wards.
If you aren't dependant on it, you can also rush other items instead.

Still, Wriggles is a cheap upgrade, so if you aren't sure whether you should upgrade it or not, just upgrading it anyway doesn't hurt that much, the extra ward is always nice to have.