Best type of dog baths for groomers

Not sure if I'm in the correct section. But I need some advice please. I am a fairly new dog groomer and as my business is taking off I feel my back would benefit from having a purpose built dog bath insdteasd of using my home one.
Does anyone here have opinions on which type would be best maybe groomers or ex grooming etc. I was looking at may a steel bath with adjustable levels or hydrobaths?? Any pros and cons welcome. Many thanks xx