Finding the best file repository app for me

Now that I have a iPod Touch 5th Generation, I want to find a file local repository app so that I can use it to storage all kinds of files.  Actually have quite a collection of these days, and found that each has it's strength and weakness:

• Air Sharing was the one that I first brought since was still using the iPod Touch second generation. I love it's stable WiFi Sharing capability (all I need is map a drive to to the IP of the iPod Touch thought http protocol), and it has a great array of cloud connection capability.  But it misses thumbnail display feature.
• Phone Drive has nice players for image, music and such, but it's WiFi Sharing capability just doesn't work, and after all the frustration, I just give up from using it.
• FileApp Pro suffers the same WiFi Sharing problem as Phone Drive, and so I stopped using it.
• PDF Expert has similar kind of problem.  Yep, WiFi Sharing seemed not working for me.

So at least for now, I am settling with:

• Folder Plus for music and audiobook playback, mostly because it's ability to navigate back and fore audio files.
• File Manager for photos (since it has a nice thumbnail view) and videos (since it uses standard Quicktime video control).

Both Folder Plus and File Manager works pretty well with WiFi Sharing, which making loading content to my iPod Touch a super easy task.