Thanks very much for your thoughts
@tokam. Understood your point of view. A couple of things to add: for the reason mentioned above (not knowing that another type exited) I've been using LR all my life with that camera, and I had zero problems with leakage (I've been thinking that perhaps it's the most important part, making no damage to the camera in the first place, more than the battey lifetime itself). And two, I have to agree with you that is rarely the case when one has to change the battery that often (12 months or less) 'cause it depends on many things to consider as well. So, battery lifetime is not that important.
Now, shooting multi format as I do, I guess i have to live with the frustration of taking the camera off the shelve after some time, just to find out that the battery is over. I close with the idea of the first option (LR), just as always.
Thanks again!