Actually DVD Decrypter will burn DVD's as well without nero. You are correct that Shrink won't burn without nero, but you can use Shrink to shrink and output the result to a folder and use Decrypter to burn as well. I find it easier to have decrypter loaded, and nero loaded and then do it all with Shrink (reading, shrinking and burning) all with the "one" interface. But that's just me.
And a few years ago +r and -r made a difference cause some players would only burn one or the other, but these days, most modern players will read both.