I'm looking for a better pad for the front too and it seems the EBC sintered pads are likely to give the biggest boost, but with greater disk wear. The EBC organics get recommended too.
For me, the back brake is hugely powerful and can stay 100% stock. It's the front that is too feeble for my liking - no initial bite and no ultimate stopping power either. However, both brakes together works brilliantly.
With a motorbike, I'm used to putting the front on first to get the front tire loaded, then using the back as an extra. But on this back heavy scoot, that method doesn't seem to matter at all in the dry so the two at the same time works well. I haven't tried heavy braking in the wet yet though.