I am a g15 (v1) fan.

But this thing looks impressive.
extreme tech review of ms sidewinder x6
It looks at first like a slightly nerfed g15 with only 1 row of 6 programmable buttons with a switch to give you another 6.

But the numberpad is detachable (and has latches so you can hook it up on the left)
and has a 3 way switch so its numpad/macro1/macro2!!!
Supposedly available in a week or 2 in Australia.