IL is better than Happ if you can find them, but you can't beat Happ on price.
The problem with Happ is that they use unprotected microswitches, and the actuator wears them down to the point that you can't hit diagonals. You can swap them with the button microswitches at that point since the nubby switches work fine in buttons, but the real solution is to use switches that have the little metal lever protecting the plastic bit.
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