I'm really quite fussy about my handle, I like it to be very oval and not to think, not to thin and just have a specific feel.
For example, A made of mine has a Bradbury Players X which is the best bat from Bradbury and destined for someone playing for Western Australia. It has the best ping I have ever felt on any bat! Better then my H4L. But the handle is just horrific! Its not even round, it seems to be slightly oval but the other way to what they usually are! So that. A big bat is also nice to see, but its a bit down the list of important-ness.
What do you look for mate?