GG7 and GM7 can be found at sport planet, Pearl Point or any other sport planet outlets I guess. I got both my GG7 and GM7 from the place. GM7 and GE7 are going for RM99 while the GG7 is RM129. From the reviews found online, it is said that GG7 is to be used indoors while GM7 outdoors but I dont think so. My GM7 had problem where by dust sticks to its surface very easily, thus losing grip and making the ball look all dirty and old. The same doesn't happen to the GG7, I wonder why. My 2 week old GM7 looks dirtier and worn out compared to my friend's 3 month old GG7. If you play on a cement court, I would suggest GG7. It provides a better feel while you play because it has a softer surface compared to GM7.

In terms of durability, my guess would be GM7 due to the fact that is has a harder surface. But if i was to choose again, i would have gone for two GG7s instead. Just my 2 cents worth of opinions.

Pearl Point is in KL, unfortunately for you bro. =)