RJEV: After reading these posts I don't know how "real" the feedback is. Not to come off to harsh but there's some wild claims in this thread.
First, facts: it's heavy duty (Diesel) vs. mid-duty (gas). The Meridian sits, empty, heavier than the GVWR of most 'W' chassis. The C7 is 860 lb tq vs. 450 on the 8.1. The Meridian rated to tow 10k; most 'W' chassis are 5k. The C7 is mated to a 3500 Allison; most 'W' are 1000/2000 series tranny's. My 350hp C7 is currently, with 4k miles, running 8.4 mpg, towing 2500lbs (trailer + dirt bikes).
I could go on. Determine your needs and purchase a rig accordingly. Needs are items you must have at your budget.
Falsehoods:
1. Ride. Sorry, Tom-NC, my Freightliner with airbags rides better than the 'W' chassis anyday of the week. I've driven three 'W's: '04 Holiday Rambler, '06 Southwind, and '06 Winnie Adventurer. Meridian's ride is better - hands-down.
2. Some of the gas mileage claims are a little high. Most 8.1's in the GMC/Chevy 2500-3500 series trucks are runnin 9-11 mpg hwy. They weigh, empty, 1/3 most of the motorhomes listed on here.
3. My C7 takes 19 qts of oil, not "35" Remember: Diesel oil change intervals are 2-3x gaser. That's not mentioned anywhere in this thread. (e.g.: Cat recommends a 11,000 mile oil change for my motor). Oh, and BTW: The 8.1L is a 9-12 qt oil change. Not "6" as stated in an eariler thread.
NET/NET is this: what's your intent. Many of the 'W' chassis are great motorhomes and fulfill 80% of the rv population's requiremets. Heck, I've even encouraged some of my co-workers to go the workhorse route. Made sense for them. DP made sense for me. Yes, I paid more. Yes, diesel is more at the pump and in some aspects of maintenance. In the end I will be towing some significant weight (> 5k lbs) so I NEEDED a DP. And I've been BLESSED to have the finances to purchase one.