Our money would probably go on the Black & Decker Dustbuster Flexi Auto. If you’re looking for a brand-name product but don’t want to pay a premium, then this is ideal. It can be powered from any in-car 12V socket and comes with a five-metre cable, so you shouldn’t struggle to reach all around your car with it. Crevice and brush tools are included, as is a neat storage bag, and it also has an easily emptied bin. The link is here: amzn.to/2T4D2sN