I can't decide whether to forego suction and running time for 'convenience' of having a handy device to just grab & go. Very handy for cleaning up after my toddler & hoping I will be inspired to do the stairs more often & I might even have a whizz round the car as well.
But the corded models are generally cheaper, more powerful, don't have to worry about it not being charged / running out of charge.... But I know myself well enough to know that the car won't get done with a corded.
There is a cordless model I really like the appearance of, for £70, with 1 one star review and 4 five star reviews.
The corded contender is £40, with 400 five star reviews and 10 one star reviews, but I don't like the aesthetics of it!
I have a hand held Dyson for the car and the staircase. Although I usually end up doing the staircase with my Dyson vacuum while vaccuuming the hall. Charging up the hand held Dyson takes ages.