Thank you for all your feedback, I was not expecting so much! All your posts have been very interesting and very helpful to me, and some made me laugh as well.
As Marvin said, I am sure that I will decide to own more than one Ring cycle. Like a set of the Mahler symphonies, the interpretations are so different, and none can be perfect for such an expansive piece I suppose.
Will start with the Karajan, then the Bohm, then eventually the Solti and the DVD set that Jens recommended.
Thank you so much once again for all your help!