Many couches nowadays are very versatile and can be used for vitually anything in the salon.
I have a home based salon and bought my inexpensive couch from Salons Direct. It is actually a portable couch although not intended for a mobile business. The reason I chose it is because it was excellent value IMO, yet sturdy, and I can fold it up as and when I like, if for any reason I need it out of the way.
Some massage couches do not have the facility for sitting your clients upright, so this put me off purchasing them.