Stewart,
I got this one a few years back -
https://www.cardryers.co.uk/Blaster-Car-Dryer.phpLike Steve, I bought it at the NEC show so managed to get a discount on it.
Overall, I would say I'm happy with it.It doesn't have the heating element to it but the air does become slightly warm as it is forced out of the nozzle.
I find that it won't completely dry the car - unless you spend ages using it, but it does force the water out of all the nooks and crannies and makes it much easier to finish off with an absorbent cloth.
I would definitely recommend the wheeled dolly to sit it on as it lets you move it easily around the car.
I have an old electric leaf blower and a cheapo 2-stroke one too.As well as collecting up many hundreds of leaves

,I also I used to use them for drying the motorbike but the blaster is much better than either of them.
If I was investing again , I might be tempted by the larger version - but it is a lot more dosh.....

James