been looking at various tub vacs recent.just wondered if anybody has any experience of some of karcher t-range (t12- t15-1 etc) and my more likely one nilfisk alto attix 3 or poss alto aero 20-21.my needs are long cable,hose around 20l mark with power tool plug and quiet as poss.can't seem to decide so any feedback on any above or others would help.regards jamie