Buy both. I did. For me, the needlenose is best for what I'm doing everyday, as it is more, or less, all around. Needlenose, the way they are on Gerbers, are plenty tough as well.
The blunt nose, which I just bought, is for fencing work, as well as mechanical. They are more resistant to twisting than needlenose (which are, under no circumstance, intended to be used for twisting), which working on fences, is something I'm almost always doing. But, the one thing they wont do--get T-Post clips into place. So far, the rounded "chain nose" needlenose of my SwissTool beats every other tool on the market in that job.
But for all-around use, I'm gonna say needlenose.