I haven't posted in a while but sitting here this morning puffing on a 200 watt Snow wolf coupled to a Herakles Plus just takes first place in my book .... Filling from the top enabled me to never have to remove it from the bottom since I installed it ... which for me always ended up in the entire connection releasing as the removable glass and threads tightened up from heat, or a bit too tight of a twist when reattaching. The plus has air circulation galore ... I truly think this top filler is a must have for high wattage users ! The nickel atomizers work perfectly as the Wolf immediately kicks into temp control producing cool smoke and retaining a very heavy cloud .