I am a wanker (of other men) more often than I am a sucker, and definitely more often than I am a fuckee. As such I do find tiny dicks can be a little frustrating from my point of view, there is nothing to take hold of. Tiny is not the same as small, I am quite happy to work with a dick somewhat smaller than average(average being, so I am told,14.9cm) as long as it gets hard. Big dicks are fine too. I do find very thick (fat) dicks a little off-putting; I don't have any stats to back this up, but my impression is that large girth very often goes with a dick that takes a long time to get hard, or hardly gets hard at all.
I had a guy once whose dick was about average in length but very thin, almost pencil-like. Once I got over my initial impression of finding it a little freaky, I quite liked it. It was ideal for a hand job, I could get my fingers around it and completely control it.