General

I use it all the time because it looks cool and makes my Battlemage less spammy.

I teleport in place to finish them off faster.

Finisher's only really good when you first start putting points into your next Blow skill. With the enemies I was training on early 3rd job though (Above my level, harder to hit, multiple hits meant more chances to hit, damage range was enough they went down quickly anyways) I didn't consider it worth the hotkey space.
I haven't touched it since 1st job.

I use it all the time. It feels kind of inefficient, but I like the high numbers and the way the purple staff moves. I also feel like it's good for telecasting since you don't need to be too close.

[quote=Simonpig]Level 120 and I still use finisher, it's really handy. I don't like doing final blow twice, feels more easy to do final+finisher, plus I think it's a bit faster. It also has a bit more range allowing to lure monsters to you . I only really use dark shock when body boost is on with dark aura because then I know I'll definitely 1hko the monster.
Shouldn't you chain>blow>finish them off? blow>chains doesn't seem very efficient.[/quote]

I usually teleport towards a monster damaging them and attack and if there is monster out of my reach I pull them with Chains and kill.

I rarely use finisher now, quintuple blow is good enough for me. I do use it however, when I get bored, just because it looks funky.

I use finisher, since I 2 hit my monster, I x5 blow them then use finisher. Or just teleport to them.

For mobbing, i use Yellow Aura,drain and booster with occasional body boost, and just keep using Tele + Chains + 5x.

For bossing, for example, Mu Lung Dojo. I use Dark Aura and Body Boost, drain and booster and finish up every blow with a finisher. Providing you have enough weapon speed (i use Evil Wings) you'll be killing them a lot faster, since i do around 13-15k+ damage every finisher, with around 8-10k damage from the 5x blow.

And i'm level 72 by the way.