vimalkumar, if I were you, I'd try a few of the trial version first.
Object Desktop has a lot of cool stuff, but I found personnaly that in the end I really only use Windowblinds. But, what I like about my Object Desktop subscription is that if I wanted to use it, I could. And once in a while, I actually do. I run Desktop X or Objectbar for a day or two.

As for Windows FX2, try the trial version if there is one because it's useless on a few computers that don't have the kind of graphics adapter needed and/or the proper drivers. It doesn't work on any of my 2 computers.
So, in the end, don't rely on people: see for your self: download and run the trial versions. If there are more than 2 programs you like, then it's worth it (20$ per program vs 50$ for Object Desktop).