Didn't want to hijack another poster's thread so am asking all current owners....
Is it really worth paying an extra £30 for the DC31 (the blue one)?
It has dual power (70% extra suction) and 10 mins of vacuuming battery life rather than 6 mins compared to the DC30 (the yellow one).
I'm paying with nectar points but have to remember that although this is not real money, I had to spend a blooming fortune in Sainsbo's to get that £30!