I think the unger looks great, so easy to set up and all you do is grip it shut flick it open and sits perfect on the pole. I think everyone will have there own one they like but it does the job. I just worry will the water pressure then goign back effetc the pump on a facelift big boy pack? I would only have it off for a little while whilst moving to the next window, so 20 secs or so.