Andru-
You drafted a VERY good question here my friend. Like everything else on our bikes, we all have opinions on stuff like this and I wanted to share my "Opinion" with you if I may?
Please take a read of this thread on this forum, and Post #5 which was my reply post to it all.
http://www.ducati.org/forums/916-996-998-748/58230-748-charging.html
I have had the absolute BEST experience with Tecmate, and meeting and still communicating with this VP makes it so much better overall. He was so incredibly gracious to me back when it was "donated" to me awhile back, and is the nicest guy one would ever meet. Feel free to contact him and use my name as well. SO- my opinion is that Tecmate is hands down the most superior Battery Maintainer & Life of your bike which will save the battery forever! As stated in my post of this thread - I still have my OEM Battery in my 1199 Tricolore!
Best wishes in your choice and PM me if you would like any other info my friend!