We have a kenmore canister vacuum and are wanting an upright. Are Dyson vacuums all they’re cracked up to be?

I see on the Lowes & Home Depot websites that there are a lot of different models. Can anybody tell we what the difference is between DC17, DC18, DC24, DC25, etc.???

Boy you guys are a lot of help (not). Look, I’ve been married for 13 years and I think I know my wife better than any of you do. The question wasn’t "should I get this for my wife for Christmas".
And just so you know…a couple years ago I surprised her at Christmas with a trip to Key West just for the 2 of us. I also spent a year going through our old photo albums and scanning all the photos and putting them to music to create DVD slide shows. And this year I drove my wife and kids and her elderly parents across country so my father-in-law could visit the last sister he has left alive. I do the dishes. I help with the kids, with the cooking, etc……..so don’t give me crap about not being thoughtful or romantic. Did it ever occur to people that if you show your love for your spouse on a daily basis then maybe they don’t expect you to make it all up once or twice a year at Christmas and Valentines Day?? Give me a break people.

And can you tell me how long it lasted you?