Flooring

Yesterday we picked up some flooring samples.  I can't decide!!  The "lighter" ones are about identical to what we have now.  I love it, but do I want something different?  If we stayed with the same shade, should we keep our existing hard wood and add in more of the same in the new sections??  The darker ones seem to have more of a black tone, not sure if I like that, but I definitely don't want a red tone and I see that a little in one of the lighter ones.  Such a hard decision!