If I can be of any help to this post, we moved from an Edge M22 to an Oscar Romeo 345RLS this summer, so I can speak from both sides. Our Edge was a flawless unit, and I can only speak highly of Heartland.
The Heartland brand is not represented well at the local level, with only the Elkridge model sold at a dealer that made it very clear that Jayco was their main brand focus. We were only shown the Elkridge on the lot after specifically asking to see it. On our wish list we wanted a king bed, dual pane windows, and an upper grade kitchen (corian countertops, etc.), and to stay under 35 ft. The "Jayco" dealer could not have been less interested.
We stumbled upon the OR when visiting dealers looking for a gently used Heartland. They are a newer company, perhaps in a place where Heatland was several years ago, owned by former executives from other RV brands. They are incredibly responsive to warranty and non warranty issues, and I cannot remember a single post from the owners forum complaining about factory service. I am sure there must be some, but they must be very few. There have been issues regarding the cable slide system, but once they have been properly adjusted, they seem as reliable as any other system. We did have to have one cable alignment adjusted, and have had no issues since. The BAL Accuslide system is used in several motorhome brands, and I believe is even used in some Heartland units.
The OR line features 100 inch width, allowing an extra 4 inches for either bed length or dresser length, a standard levelling system, and standard JT Strongarms.
From a post that I had placed on RVnet, I received a personal message from the Heartland president asking in a very friendly manner, why we had chosen the OR brand. I don't think I can offer a higher endorsement of a brand than personal contact from the brand's president. When it comes time to replace the OR, I will most certainly be considering the Heartland brand.
To sum up, we have been very satisfied with the OR 345RLS, but we were equally satisfied with our Heartland unit.
The measure of any brand is not whether they have problems, but how those problems are rectified. Both brands seem to have found the formula.
-Cam