I use titanium in my tanks (RBA) and my drippers because of longevity... I highly recommend Sweet Spot wire .05 for drippers and .04 for tanks. This is pre-cleaned and shiny. Costs a little more than your bulk Ti wire, but well worth it. I usually do 5-6 wraps spaced on 2.5mm comes to about .11 and vape at 60-70 joules... Cheers!