Exterior Porch material

[Curt Bixel]

I have a porch on a 100 year old property.  The current porch flooring, likely original, is getting to be in pretty bad shape, and I am likely going to replace it with new.  I am curious what the best options might be.  I know I can go with pressure treated tongue and groove, I could also go with a more expensive fir tongue and groove, but doubt I would get more rent for this.  A cheaper way would be simply pressure treated 1x6 or 2x6. 

Finally, I am wondering if the recent increase in the cost of lumber has made composite material more attractive.  

I even read somewhere that you can use pressure treated plywood and then use wood look luxury vinyl tile, but my gut tells me that this cannot possibly be a good solution.