Having owned several RV's over the last 27 years including both Class C and Class A models. I can say without a doubt the Tiffin 34TGA has been by FAR the best coach we have ever owned. Now, I can name multiple other brands, all well known, that we have had nothing but problems with, one "name brand" was built so poorly, even though one of their higher-end models, there was literally a 1" gap from the firewall to the sidewall of the coach. You could see light shining through from campers turning on their truck lights as faced across from our site, which is how I noticed the gap. Then drove to the factory in Indiana with the promise it will be fixed correctly, where they filled the gap with caulk, far from the repair we discussed.
The Tiffin 34TGA represents the high end on the "trim quality" before you start looking at "diesel pushers".
This is an important point to understand, in the RV market, the quality and durability of the cabinets, furniture, and appliances improve as you climb the trim level.
The 34TGA represents the top of the line, so then the climb begins again when you move to "diesel". So to have the same quality trim as the Tiffin 34TGA in diesel would push the price new to at least double the cost.
The 34TGA has so many "living quality" features such as a built-in vacuum, quality convect microwave/oven. Heated wetbay is a real plus if temps are below freezing. Having the ability to have plenty of hot water powered off the generator or plugged in power is a plus to eliminate need for using propane, this same thing is true for heat, as the A/C units have built-in heat pumps so they heat and cool, you still have two built-in propane furnaces for the real cold, however, not relying on propane for the majority of the time makes it easy to have the propane when you need it versus being out having used up and no place close by to gets some, been there done that as they say. The list goes on, but solid wood furniture and a well-thought-out floor plan make the 34TGA a perfect size for a family, yet still fit into state park camping sites.
One thing you must do on any of the Gas units with large basement storage such as on the 34TGA is added rear aftermarket sway bars for stabilization of the ride and steering. This add-on makes the driving as simple as a Van and easy as one finger to steer.
In ours, we always pull a Jeep Wrangler behind, and with the Ford V10 engine, you have no issues going over the hills as well as tolling down the freeway.
I can not say enough good about the 2014 Tiffin 34TGA it remains a classic model to this day