i worked at hss and there proff machine was the truvox president, which isnt as good as your used to but still retails around the 1750 mark, twin vac and large solution tank, drawback being no heater but what i do is put the water in as hot as possible by the time it comes out of the hose the temp is okay. a weeks hire was around 70 quid but haggle with them they can always knock 10% off i know i used to.
Their are loads of hss hire shops throughout the uk hopefully one local to you, hope this helps
best regards
mat