>All three programs will produce high-quality, finely detailed >results if used properly. That usually means not using the >default settings. Personally, I wouldn't worry about it.
I completely agree. It is quite useless to argue which program is "best". I have all three programs. If a particular camera/lens module is available, I use DxO, often in combination with LR4. If there exists no DxO module, I just use LR4 and its lens adjustments. Again, this is a purely personal choice.