I use TotalFinder too. When I moved to Mac, I couldn't believe how cumbersome and feature-limited Finder is compared to Windows XP's Explorer, even more so compared to the one in Windows 7.
TotalFinder makes it a lot more usable. And the latest builds allows you to combine 2 tabs, so that you can have a dual pane view, negating the need to open 2 Finder windows to transfer files/folders in distant locations. Also, it can automatically sort your folders at the top of the screen. It's free for a little while now, but the developer intends to start charging around soon when it's ready for official debut. He said around $15.