My suggestion is to try Marlin.
Marlin is a lightweight file browser built from the ground-up to be responsive easy to use, based on gtk3 and uses Gnome 3 technologies extensively.
Some key features of XFCE file-browser Thunar too are included to give it a certain slickness despite it being a File browser. Marlin uses 'extended actions' to manage files.
Features:
Tabbed browsing
Multiple-views
Single-click to open (default)
Configurable toolbars and interface
Plugin framework
Networking support (SSH, FTP, Windows share, HTTP and HTTPS)
Single click/double click to open file
To install it:
Open a terminal an run it:
sudo su
add-apt-repository ppa:noobslab/apps
apt-get update
apt-get install marlin
And enjoy it.