If you are close to 200 36 double butted spokes makes for a more durable wheel.
Machine built wheels can be as good as hand built, but the manufacturer has to make the choice between high quality and high production. In a cheaper wheel set he will most likely choose higher production.
Unless they have changed Trek will replace their wheels up to 5 years.
You can get by with 32 spokes but they need to be brought to full tension. At least 110 kg.