Is oil based polyurethane better than water based?
Similarly one may ask, is water based polyurethane as good as oil based?
Oil-based polyurethanes leave an amber glow and require fewer coats. Both water based and oil based poly offer good protection; the biggest difference is in appearance. It's actually the most durable hardwood floor finish. If you love the natural look of maple, apply a water-based (waterborne) polyurethane.
Similarly, you may ask, is oil based polyurethane more durable than water based?
Oil based polyurethane lasts longer than water based. There is no contest on the durability between the 2 options. Water based polyurethane has lower VOC's - which is a bit of an environmental benefit (more about that in a moment) - but because it has lower VOC's (Volatile Organic Compounds), it doesn't last as long.
In the past, oil-based finishes were more durable than their water-based counterparts. Water-based varnish does not amber over time, and keeps the color of your wood truer than an oil-based finish would. However, it also “flattens out” the wood grain, and unlike oil-based finishes, does not enhance the grain.