I tried Polygon cruncher, but I did not find it way better from the polygon reducer modifier in C4D, If You have C4D license I would suggest trying it first...if not Polygon cruncher is quite a good choice for mesh reducing - if I remember correct it does have in one bundle some tool for quick UV mapping correcting as well.
Thanks all. I forgot to mention that it's Solid Works that's producing the models. Furniture producer using Solid Works and ArchiCAD. There are a few and that's the workflow I'd like to investigate further.