I use Shimano MX30 flat pedals,
shimano lists them as bmx/mtb pedals.
They are fairly large, had a good surface
with low pins, have lasted a long time,
look pretty good and are not overly heavy.
I ride with sneakers or crosstraining shoes,
they are comfortable; i do not get a hot foot, rarely slip off.
Downside, they are not the cheapest.