Sorry but I'm siding with your DH on this. The Dyson's do not hold up - if you really look at it all over, its nothing more then plastic - and if something breaks you have a dead vacuum.
We have the DC18 Slim model and it is the best vacuum I have ever owned. You don't have to buy bags for it, you don't have to buy filters for it. It never loses suction and you have the clean the filter maybe once every 6 months. We've had ours for almost a year and have never cleaned the filter and the suction is still as good as the first time we cleaned with it.
I will never go back to another vacuum cleaner again. Even if Consumer Reports rates another one as the "best buy." That's in other peoples opinions, not mine.