Which is more efficient?

I make objects ranging from 5 to 60 prims. Of those 5 to 60 prims, 2 prims need to change textures. I'm trying to do it as efficiently as possible, but have come to a point where I'm not sure which way is best.

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Choice #1 - Make a list of the prims that need changed, then use a 'while' loop to send the texture change message only to the prims that need changing.

list prim_list [5, 6]; // prim#'s of the prims that will change texture
key texture = "89556747-24cb-43ed-920b-47caed15465f";

touch_start(integer total_number)
{
integer primlistmax = llGetListLength(prim_list);
integer primindex = 0;

while (primindex <= primlistmax)
{
llMessageLinked(llList2Integer(prim_list, primindex), 111, "", texture);
primindex ++;
}
}

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Choice #2 - Send the texture change message to all prims.

key texture = "89556747-24cb-43ed-920b-47caed15465f";

touch_start(integer total_number)
{
llMessageLinked(LINK_SET, 111, "", texture);
}


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And, of course, something like this in the texture change prims...

link_message(integer sender, integer change, string message, key id)
{
if (change == 111)
{
llSetTexture(id, ALL_SIDES);
}
}

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To me, choice #2 seems like it would be faster & more efficient. But, I'm wondering if when the prim count goes up, it would become less efficient. Is there a point at which the number of prims messaged would delay the script to the point where using the list & 'while' loop would actually be more efficient?