callback params - which is fastest?

[Asko Kauppi <asko.kauppi@...>]

I'd like to hear you "gut feelings" on three different ways to pass 
callback parameters to a Lua handler.
It's about a fairly large buffer (say, 4096 8-bit integers) that the 
Lua side would be interested to get. Now, candidates are:
a) table:
	+ conceptually "the right thing"
	- performance must be lowest?

b) ... (lots of integer values):
	+ fast to send, fast to receive
	- is there a limit to the number of args one can get?  is 10000 too 
many?
c) string:
	+ fastest to send (no conversion, just cast Uint8 buffer to 'const 
char*')
	- fast to receive, but individual values need to be extracted by 
'string.byte()'
So, which one would you opt?  Eventually, I will do performance 
valuations & might post them here.
But.. who's got the right guts? :)

-ak