Depends on, but default fire.

But in pressure fire sucks -and I like BOOM - and I can't understand what's the big idea in fancy mod.

I use fire most, then velocity sometimes.
I never use blob or fancy display.
I use pressure and persistent sometimes.
When nothing display is out (I want it it since I first played TPT) I'll probably use that most.

Usually fire mode. At first I thought you meant what kind of monitor (if anyone's curious, it's the 15" 1440x900 display on my MacBook Pro.)