It depends on the cleaning solutions you use.
Detergents are usually used in the tank and need hot water. One step cleaning.
Microsplitter types are used as a prespray and need agitation then a plain or acid rinse, this can be hot or with me more often cold.
So you have to decide which route you wish to go down.
A lot of people use a Sebo Duo for agitation but find it a little lightweight- a heavier CRB will pay dividends in time saved.
A pile brush is fine but is hard work, by the time you have done a 4 bed house you will know it.