Need a small vacuum or dustbuster for around the house and in the car. Can't decide on whether to get a powerful dustbuter for like $70 and have the freedom of cordless and recharging or pay a bit more and get one of those plug in pirahna's or quicksilvers (tons more power than any dustbuster!)

What would be better?

my mum used to have a dustbuster and it didnt really work.. it would pick up the stuff you could see but didnt actually clean.. if you know what i mean. I got a shark bagless vacume 2 months ago for $180 and it is amazing, no bag so you just tip the dirt out and you can feel how clean it is, comes with all sorts of attatchments and does james's car really well:)