Thanks guys for the insights
Yes, shingle hammer looks beefier than the drywall hammer
I will look into it.

I hav another question about hammers. Once I bought a bucket load of hardware from someone. In that bucket was a hammer that was like any carpenter hammer except it had a squre face and the nail puuling side was not symmetrical. One "horn" or "fang" whatever you want to call it, was taller than the other.

Like this hammer:




So, what is the purpose of this hammer ??