I bought a karcher vacuum from b&q, think it may have been an end of line but it's great, I've removed the bag so I use it for 'damp' carpets too.
You'll love the sidekick, it's a great bit of kit and your neighbours will definitely think you've lost it 
I'm using the household dyson vacuum which is just too cumbersome. Last year I bought a handheld cordless dyson for the car but it lacks suction and battery charge is crap, so been eyeing up a Metro Vac one for a while, but it'll have to wait a bit now I've splurged on the dryer.
Neil, my neighbour is into motorbikes so he well understands my motor love. No neighbour on the other side, just a hockey pitch - I live in fear of a stray hockey ball hitting the car, there's been a couple of near misses

Should be here for this weekend is I can try it out
