I've seen lots of posts on here asking about different vacuums for RVs. I've been a big fan of the Dyson vacuums. I have one of the Dyson Digital Slim vacs and it has been really good in my RV.
However, I recently purchased a Shark Rocket vacuum and to tell the truth it kicks the Dyson's butt. In fact I used in it my home and it does every bit as good as the Dyson DC41. It is a corded vacuum, so if you're looking for cordless, this isn't for you. However, corded is way more powerful.
This vacuum is a perfect solution for the RV.
2015 Keystone Passport Elite 23RB