QueryTaks vs Identify Task

[GavinTrowles]

Hi

Im just wanting to know what are the most appropriate situations to use each of these soloutions (Query Task/Identify Task). Currently I am using the query task when dealing with a small set of datapoints (less than 500) and I am using a dynamic layer (over the top of a cached layer) which I query with Identify task when dealing with a large set of data points. Is this the correct choices to make in each situation?

Thanks for the help

[K_DRex]

I believe I read somewhere in the  "JavaScript API Concepts" tabs  that one advantage of the Identify Task is that it can be used against multiple operational layers.
The Query Task can only be used against one operational layer.
Also, you need to consider performance concerns. 
http://help.arcgis.com/en/webapi/javascript/arcgis/help/jshelp_start.htm