Hope this isn't too much of a newb question. I'll ask it in the context of what I'm trying to do so that maybe it's more clear. I'm working on a site that has a list of featured products that I'd like to store in a table form in cache, since this info doesn't change much and will be used on many pages. Here is what I'm wondering:

Is it better to store this information in a DataTable or a DataSet? This table does not need to have any sort of relationship with other tables that will be in cache. Do I avoid any overhead related to this by not using a DataSet? Whether this is true or not - does it make it harder for the cache to manage itself if you have a DataSet containing multiple tables in cache as opposed to individual DataTables - for memory management, won't cache have to remove the entire DataSet if resources run low, as opposed dropping individual DataTables?

And I suppose the last question I should ask is: Would I be better of using another way of storing this information, like an ArrayList or something? I just need to use it as a datasource for a datalist (w/datakeys), and it's nice to be able to reference column names when I'm using databinding expressions.

Thanks in advance! I'm probably misunderstanding a major concept somewhere, so feel free to point out the obvious!