Price-wise and maintenance-wise there is no better deal then acid-stain .Caesars Palace in Las Vegas used the best commercial carpets and tile and had to completely redo the floors every year due to wear.They went with acid-staining years ago and still have the original acid- stained floors today.But as in everything,it depends a lot on the quality of the work and the materials used.Most people use an acrylic sealer because it is cheaper and a lot easier to apply.The trouble is acrylic sealers wear and will need resealing in a year or two.I only use polyurethane because it is the toughest and best looking finish out there.With polyurethane you will never have to reseal it,it is there for life.On top of that I put a final coat wax,which not only adds to the shine,but gives it a non-slip finish.It can be cleaned with a dust mop,other then terrazzo there is nothing else as low maintenance,this makes it very popular in hair salons,for it's ease of clean-up.I believe the products I use are the best in the world,and I have great confidence in them.If you like,please give me a call and we can discuss it farther.