Used to be great, now just meh..

Forklift used to be great, almost best in class.
Unfortunately, this version 2.x does not work with El Crapitan. (spontaneous freezes and kernel crashes while moving data to/from remote network SMB shares).
The best you can do is wait until version 3 fixes all stability problems. If you need a file manager right now and cant wait, there are two or three better options available on the App Store.
It pains me to see this slump in performance because I was a die hard user since the very begining. On the other hand, a lot of the development issues are part of the general misery brought by El Crapitan.

the sheep are speaking about ForkLift - File Manager and FTP/SFTP/WebDAV/Amazon S3 client