Object Desktop has many programs with it. Cheaper to buy the bundle than one at a time. It is worth it to me and all the other people who bought it, but wheather it's worth it to you, thats for you tom decide.
I bought Object Desktop (which gives you all the basics) a couple of years ago and then added what I wanted after..turned out to be everything. Try it, you'll like it
Buy Object Desktop. You will not regret it for one minute - I haven't. You get loads of proggies plus regular updates for what is a small amount of money. It's a bargain!
I bought Object Desktop in January and it was and still is kind of overwhelming. However, if you plan on making skins from scratch, you will need 3rd party software such as Paintshop Pro, Adobe Photoshop, etc.
It is a tremendous bargain for the money. Heck the message board alone is invaluable. Where else can you get 24/7 support, make friends, have fun, get the latest gossip, and maybe even learn about skinning and such!