Definitely the small terminals. I remember when I first took an NI training course (running LabVIEW 2009 I think) and saw all these huge terminal icons. I had been using LabVIEW 7.1 exclusively up to that point, and didn't know what they even were at first. Like asbo, one of the first things I change when I do a fresh install.
The only case that I've seen where they provide something extra is they display whether you have a chart/graph indicator or just a "plain" array or waveform indicator. Still not enough to make me use them, but it's something...