A few years ago, when I got my first MBP I made sure to take care of it: I verified the HDD periodically looking for problems, recalibrate the battery, run Onyx from time to time to "clean" the system... Now I'm going to get a new MBP and I want to start being careful again. What are the things that I should take into account? Is there a better alternative to Onyx? Also, I remember that the first generations of SSDs used to have a degradation problem. Has this been solved, or is there anything I should keep in mind to make sure that my SSD performance doesn't go downhill? Thank you in advance.