What "SLIM" keyboards work good with Stepmania?

[Slooog]

I currently have a g15 keyboard that i use, and I have a spare slim crap keyboard that i use as well, the key height difference makes a huge difference in how well i play. I do much better on a slim keyboard / laptop keyboard compared to a normal size due to the height in the keys.

Anyways, My current slim keyboard has that problem where you cant hit certain buttons along with others, so with songs where there are 3-4 simultaneous steps I have to just accept a miss. So does anyone know of a slim keyboard that allows all four arrow keys to be hit and read correctly?
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[QWERTYkid911]

Set the arrows keys and the 5, 1, 2, and 3 KP keys to the 1p pad and use a combination of spread and index.

[Devon]