Item types - best practice

Hi there,

We are getting ready to start using NetSuite to track our inventory for items assembled at our location. Is it better to use Assembly items or Kits? Or Matrix? I don't get the difference in assembly and kits, although I recall reading many posts saying one is better for something and the other for other things, but can't find the older posts anymore.

We need to be able to keep tabs on parts that come in, so we know what is in stock, then when products are ordered we want a workorder/build list with all the required parts listed, and inventory adjusted. If there is not enough parts to build the product an indicator to let the appropriate person know they need to order the parts. All the while, keeping the inventory straight on all the parts we receive. Please help!