I have been using GeekUninstaller as a portable application in "USB toolbox" for a couple of years now. A 6 MB, single file, great for a quick look if I need to open my usb toolbox on a PC, laptop from a friend or relative. Though I may switch that out for HiBit portable, given the good reactions I have read about it and the fact that Geek hasn't been touched or reacted by the main developer for over two years. But if it works, it works right.
On my personal computer I use BCUninstaller myself, though I never gave Hibit a real go... Anyone have any experience with the two, personally?