With Ktorrent, it's quite easy, you just type ktorrent and it launches and the download just picks up where it left of.

With bittornado I use btdownloadgui.bittornado and it launches but then I get this diaglogue that asks me which torrent file to use. Is there any way you can just open bittornado and it resumes the downloads automatically?

I have installed Bittornado once or twice, but I don't really remember how it works. I believe you don't have the latest version. Anyway, You'll probablely need to select the .torrent files everytime, then bittornado will resume the download from where it left it.

Anyway, you are talking to a guy that has installed more that 20 different torrent softwares. I have tried pretty much every available torrent software for linux now. If you allow me, I suggest you to use a different software like KTORRENT that you have mentioned, DELUGE or QBITTORRENT.

Many people today use AZUREUS. I don't like it, but it's the most complete torrent software for linux so far. IT's heavy, the config is not really intuitive, but it's complete.

See ya.