Poplar trimwork on porch?
I'm building a house and framing is just about complete. There is a large covered porch with a reverse barrell vault over the center. There is a fair amount of trimwork (porch beams and crown moulding), and the siding contractor will be doing the trim work on the porch. He suggested we use poplar since it will give the detail we're looking for, and would be a bit cheaper than using a PVC product (such as Azek). We'd be wrapping the beams, doing crown, and doing the soffit overhang with poplar. The larger soffit areas would be a wood beadboard.
Is poplar a reasonable choice? I know the Azek is pretty pricey. He didnt' want to do the overhang soffit with aluminum because he didn't feel it would blend well with the wood or azek trimwork. I'm a little worried about the maintenance. Both the azek or the poplar would need to be painted, but what about painting again in the future?