As has been said before, most Class C's are built on Ford E-450 chassis and have the same brands and models of appliances, air conditioners and generators etc., installed. Major differences are in how the housebox is constructed including choice of materials, fastening techniques, quality control and promptness and quality of dealer fixes, under warranty, after you take delivery. Most RV lines have entry level/economy models and higher end models. You will pay over $10K more for Lazy Daze, etc., but it will have higher resale value if kept in good condition. We have been satisfied with our Fleetwood Tioga 26Q since we bought it new in 2004, so far no leaks with EDPM roof, had to replace fridge and roof AC unit a couple of years ago, exterior graphics have suffered sun damage. Expect housebox item repairs/replacements after 8+ years with any brand, tires need replacement every 4-6 years due to sidewall cracking and damage from sitting undriven.