I have always preferred the drops.

As I have lowered my stem, my belly has become the problem... another incentive to keep shedding the weight.

It is much less work on the drops if you can get comfy there - you present less wind resistence, and therefore don't work as hard to get somewhere slightly quicker.

Sliding my seat back a fraction made my ride more comfy too - and I mean a fraction - I think it was about 1 - 1.5 cms!