I use a PS3 controller with little plastic attachments for the L2 & R2 buttons so my fingers don't slip off them. You have to install drivers to get the controller to work on Windows but you can use the Home button as an additional button, so that's an advantage over all of the other Xbox and PlayStation controllers.
I use Joytokey (PC software that lets you use keyboard keys from the controller) to configure my controls in a really complicated but efficient way so I can pretty much do everything from the controller.
I think he was exaggerating a bit. Of course it depends on the current exp boost, but if you are good at the game, it will probably take a couple of hours to reach 100. And once you get to 100, you can level up really quickly in CCA.
I can always avoid all tornadoes if I hug the right wall. At least, this works for the far right room. It's rare for the boss to enter the other two rooms so I don't know if it works the same there.
You know what's a good model to use for a strong simple tech weapon? Twinkle Star. Normally, no one uses Twinkle Star because it is completely useless compared to Summit Moon. It has weaker boosts and doesn't even have a lower MST requirement. Both Twinkle Star and Summit Moon are easy to get too, so there is almost no reason why someone would use Twinkle Star. It's such a cool model and it's a shame that no one uses it.