Finding A GOOD Vacuum

I've been online the last few days looking at, of all things, vacuum cleaners. I don't know what I want as far as bag or bagless--I just really want something that works longer than the 6 or 7 months we've gotten out of all of our vacuums over the past 5 years! Honestly, I don't know anyone who goes through vacuum cleaners as often as we do. But with two long haired dogs and 4 kids-I guess it really is put through a workout.

My husband would like a bagless vac-you know, cut down on some of the maintenance costs. I would like something like this Miele vacuum. It has a real "retro" look to it. I especially like the yellow one!

At this rate I should actually possess a new vacuum in 2 or 3 months!