Matte aluminium would be cool, but I wouldn't mind glass either.
For me, the rank of best looking iPhones go:
4 > Original > 3GS > 3G
(I prefered the shiny text on the 3GS
)
For me, the rank of best looking iPhones go:
4 > Original > 3GS > 3G
(I prefered the shiny text on the 3GS