Best SCP GUI on Linux

For the impatient

1. Look no where else if you already have nautilus file manager
2. For best view/performance setup nautilus in browser mode [ edit -> preferences -> behavior (tab) -> behavior (section) -> check "Always open in browser windows" ]
3. "sftp://user@machinename" in the address bar and you are all set ;)

For the rest

Till I found sftp with nautilus I also came across some reads on fish for Konqueror