Metaproducts Download Express
I'm trying this one at the moment as it's <300K to download and is very simple to use it doesn't have any advertising and is free if you download the Express version. It allows you to resume downloads and also allows you to vary the amount of resources it uses.
Star download kept butting in when I tried to log onto websites
Download Accelerator hogs the resources on your connection (some pages wouldn't load when it was downloading)
Fresh download just annoyed me.