black iridium & fire iridium - for bright days.  cool looking and reflective, but not too good if you can't see the sun.
blue and gold iridium - for all around, decent in most conditions but don't really excel anywhere.  also reflective but not as much so as the first two.
HI blue - yellow lens with blue coating, sick in low light days, but they actually make the sun brighter when you wear them on sunny days.
HI persimmon - rose lens with rose coating, from what i hear equally as good as HI blue, but inlike the blue ones i can't vouch for them personally.
G30 - rose lens with blue coating.  probably just a third option, but just from looking on ebay these are probably the rarest lenses.  dunno how they perform but i'm sure they're geared more towards low level
regular persimmon - typical rose lens, cheaper cost
vr28 - also cheaper, typical amber lens
and i think that's all the lens color options oakley offers on their goggles.
-Strode
Only in my sweetest dreams do my streams lack troubled waters, shallow pools full of shallow fools...