If I still have our old bath tubs, I would have installed spa filters. I hardly used the tub since the birth of our children as these two rascals occupy my time a lot! That was when I decided to remove the tub and replaced it with standing showers. I never regret it though. It is more convenient for us instead of climbing up and down the tub all the time. But having a spa at the comfort of our own home would be great.