GetRight[&Pro] not always best for FF; it works w/IE [might want to test though].
I have been using GetRight & GetRightPro for several years. I've noticed that having FlashGot & GetRight "inside" Firefox sometimes causes problems with logging into certain web sites [GetRight sometimes captures the login material and tries to save it to your harddrive].
Other than the above, GetRight[&Pro] does a great job of being a download manager, reporter of download progress, reporter of past downloads.