Quote Originally Posted by champagne supernova View Post
Or you can create a weapon that converts the limit gauge to experience. One then fights the Tonberry in the Monster Ring (while setting the limit gauge to take damage) and hit the Tonberry with that guy. He should use an attack that deals damage proportional to the number of enemies killed (i.e. a lot) which then gets transferred from your limit gauge to your experience, and allows you to go very far on the sphere grid.

Sorry it's so vague, but I last played X about 3 years ago. But go look at a level-up guide. This method has minimal grind and just allows you to absolutely destroy the Sphere Grid.
Yes, get an LG-EXP and also get an 2x LG/EXP or 3x LG/EXP. Also If you want to level 2 people at once set their thingy to comrade (Or whatever it is that gets Limit Guage when their teammates take damage.) then what you do is get whoever has killed many to attack the Don Tonberry, Die get revived, Die get revived etc. Also the other 2 that aren't dieng they must have the LG-EXP also. Sorry if that's a bit messed up but I havn't played for well over a year and Ive forgot alot about X.