I have a couple of questions. #1 - I have a Performa 6400/200 with 136MB Ram. Which OS suits this computer best? Which runs fastest? #2 - Is a processor card worth the money for this computer? #3 - I also have a Powerbook 3400/200 with 144MB Ram. Which OS is fastest for this one? I have 8, 8.1, 8.5, 8.6, 9, & 9.1.