Tungsten Tip Preference

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What shaped tip do you prefer on your tungsten for various welding?Do you see a difference in leaving the end pointed vs grinding a small flat land on the end of the tungsten?I'm a novice, but in AC mode at 80 amps with my Dyn 200, 80%EN, 60-120Hz, 1.5% Lanthanated, I see no difference between keeping a sharp point on the tungsten or grinding a land in terms of the arc.  If I don't dunk it, the pointed tip forms a tiny ball at the end of it.  If I grind a land, it just stays that way.  Thanks.TA Arcmaster 300CM3XMT 304S22P12 suitcase feederX-Treme 12VSOptima pulserTA161SMaxstar 150STLHypertherm PM45OP setupStihl 020AVP, 039, 066 Magnum
Reply:I am a novice as well.  And I only have a small dc inverter to tig with. (scratch start)  But I do notice that with a fresh tung with a sharp point I really dont have to "scratch" to start the arc.  Just get it about .001" off the work piece and it will fire off.  Almost like a poor mans HF.
Reply:20 amps and under I leave pointed. Above 20 amps I grind a small flat. Lincoln V205. This is the way I was taught and I stick by it.Hypertherm Powermax45Miller auto 140 migMiller Econotig Watercooledwith wp24w TorchLincoln Power255XTNew(Lincoln V205 ac/dc)Miller Elite Helmet
Reply:Needle sharp. Then forms tiny ball on end. PERFECTION!!!!!!!Weld like a "WELDOR", not a wel-"DERR" MillerDynasty700DX,Dynasty350DX4ea,Dynasty200DX,Li  ncolnSW200-2ea.,MillerMatic350P,MillerMatic200w/spoolgun,MKCobraMig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig2ea,MigMax1ea.