You should always choose a distro according to your needs as my experience says. And choosing UbuntuDDE idk now is good time. I think it needs more maturity. Now if you're switching from Windows I suggest you should try Linux lite and if Mac then elementary OS on virtual environment like virtual box or VMware, so that you will not toast your system while learning all the shit. And when you feel confident that your daily work flow can be done and all software you use can be found or replaced on Linux you switch to UbuntuDDE, it's nice looking distro with stable base . Having Ubuntu base helps with great help available online. And also you can check on this website and this website it helps to choose.