Dialogue Part 2

What do you, as readers, prefer in a book; Long winded descriptions of the scenery, of every detail or Dialogue.
Yeah, that's what I thought.
(If you chose scenery you are the most patient reader around.)

Dialogue can not only convey messages about the character's relationships with each other, their background (i.e. slang). Dialogue can also tell the reader about the scenery. For example;

"...five steps, six steps. Six steps long."
"What is?"
"This cell."
"Quit splashing around in the water and sit down."
"Sit down where? Everywhere is wet."
"Well standing by that barred window won't help your health much either."

We can already see that a) they're in a cell, b)it's wet, c) it's small, and d) it has a barred window.
A little more interesting than
The room was wet and cold. It had a barred window. It was small.

Dialogue can also show things happening;

“Duck!” roared Joseph.
"Thanks.” 
“That arrow almost had your name on it.” 
“Speaking of arrows, hand me another; I’m out,” said Marcus. 
“Er, so am I.” 
“Move your backsides soldiers!” roared the captain. “Retreat! RETREAT!”

Instead of:

When Joseph told Marcus to duck, he didn't argue. He was glad he had listened because an arrow missed him. When he asked for more arrows he was dismayed to learn that there wasn't any more. The captain called a retreat.