Dyson v15 detect -Good cheaper alternatives?

Hi I really don't want to spend over £300+ for the Dyson detect v15 I know it's very very good because my parents have it and I used it numerous times. The only bad thing about it is it is quite heavy.

Does anyone know any good cheap alternatives? I need something that can wall mount charge and suck as powerful as the v15. When I say cheap I don't mean £80 Amazon crap lol appreciate everyone's help