Best RV Air Conditioners?

[Alfredapowell]

My RV did not come with an air conditioner, so I would like to add one portable rv air conditioner now. The dealer I bought it from says I should get a “low pro“ air conditioner, but he didn’t mention the brand. Before I call him to check on the brand do you have any suggestions on what brand and/or model to get, or avoid?

Thanks