I own the 2008 2800RLS.
As a previous motorhome owner, I was a bit disappointed with the relative quality of workmanship but my prepurchase research showed that this is true for all the other brands as well. Of course the $$$ involved are considerably different which explains the obvious differences.
Maybe it's just me, but I'd rather spend an extra $500 and have little things like the leaking showers and misconnected heater ducts done right versus me having to take the time and the money to return to a dealer for warranty work. These are not isolated incidents but, as verified on this forum, are all too frequently encountered. There are some nice improvements in the 2009 models that have addressed some of my issues but I'm particularly unhappy about the continued use of cheesy Chinese trailer tires. Put some darn 16" wheels on as factory standard and mount some real light-truck tires that don't have a long, documented history of exploding. It's a TON cheaper than repairing ripped up body work not to mention the hassle of roadside problems and a possibly ruined trip. Seriously, $500 additional expense on a $30K+ fifth wheel versus all the substantial negatives is just inexplicable.
I also wish there was a "matress delete" option. My first purchase was to go to a bedding store and buy a real, quality mattress that doesn't feel like a reject from Motel 6. Why would I want to spend $30Kish on a trailer that sleeps like it's a parkbench?
Bottom line ... Heartland's product is as good as any and better than most. It will be better made than what you're used to with your TT and is upper tier in industry in terms of build quality.
One additional thing ... the RV industry is TOTALLY different from the automotive industry in the area of warranty work. You'll find there is a strong issue with dealers doing work on trailers they didn't sell. At the best you are at the bottom of the priority list. There are federal regulations that regulate the automotive industry manufacturer's warranty. That is apparently not the case in the RV trailer industry.