Which one of these KB to buy ?

Solution
I would recommend G710+ if you're a gamer who plays multiple games and not want to set different key controls for different games. The G-Keys can be programmed for every game and saved, so that when you open a game, you can have that profile ready. Plus, there is numeric pad and mulitmedia keys available in G710+.

If you want to game simply, you can get the CM QuickFire Rapid.

Note, there are mainly 4 types of mechanical keys:
Red, Blue, Brown, Black. Their function and difference (an excellent guide): https://www.youtube.com/watch?v=Ps5DEeSBl5s
I would recommend G710+ if you're a gamer who plays multiple games and not want to set different key controls for different games. The G-Keys can be programmed for every game and saved, so that when you open a game, you can have that profile ready. Plus, there is numeric pad and mulitmedia keys available in G710+.

If you want to game simply, you can get the CM QuickFire Rapid.

Note, there are mainly 4 types of mechanical keys:
Red, Blue, Brown, Black. Their function and difference (an excellent guide): https://www.youtube.com/watch?v=Ps5DEeSBl5s
 
Solution