get right is a great one, it lets you download, pause and resume, even after restarting...
it also lets you download the same file from multiple mirrors for a faster download speed...
it comes in two versions...
free. -the limitation is you can only download from upto four mirrors simultaniously, (although there is no cap on the amount of files you can download)
and paid commercial edition, that lets you download from up to ten mirrors at once...