Welcome to the forum. The quality on most of the towable RVs are pretty much the same, with the higher end models having a few more amenities and features. Aside from that, all of the components, frames, etc. are made by the same companies. Every now and then some unfortunate person will get a true lemon, but for the most part if you take care of your RV and perform regular maintenance, they should last a while. Keep it covered if possible, and inspect the roof (re-caulk) at least once a year.
Some of the more commonly discussed issues with the Voltage line seem to be the slides (depending on whether you have the Schwintec worm gear type or cable type) and the AC ducting in the ceiling not being sealed properly or having scrap from the building process blocking air flow. Other not so major issues are crappy twist on terminators on all the TV coax cables, which can easily be fixed with a coax kit from Home Depot, and of course the cheap china-bomb tires. Personally, I have re-sealed my complete AC system, re-terminated all of my coax connectors, and replaced the tires a year after purchase. I have been lucky enough to not have issues with the slides.
If you are purchasing from a dealer, make sure you get them to test EVERY feature of the RV to your satisfaction BEFORE you take delivery. The reputation of the dealers is that they want to get you to sign and out the door. After that, if you have an issue, you may be waiting months for a repair. So make sure the heat works, the AC blows cold and has good flow from every vent (including the garage). Make sure the stove/oven lights, and the refrigerator and water heater both operate on electric and gas. Test the microwave, the TVs, and make sure everything works on generator and shore power. Run the slides in and out several times, and make sure they are operating smoothly and evenly. And if you have the touchscreen remote to power the slides, awnings, etc., make sure it works too.
Sorry I can't be more specific to your particular model, but the things above are a good place to start when it comes to the Voltage line.