Perhaps it's just me, but MS Windows explorer (Win7) had become unusable from my perspective because I use the detail view and I would have to resize the columns every time I opened a new folder. There is a setting for this but it just plain does not work on my PC. This used to work fine, they broke it a few months back.
So I tried a few alternatives, several of the "free" ones are only free for 30 days. Then I tried Explorer++; this one is actually free, much better than MS version and it actually works. They even have an option to instantly convert all your old shortcut icons to use the ++ version. I also like the bookmark capability.
I'm in no way involved with this open source project I just wanted to share.