'Approved facility' is a 20K plus vacuum cleaner that extracts the burned ash and then it has to be landfilled in an 'approved' hazardous waste facility, again, not a trash bag and the 'filter' has to pass a specific inspection process as well to be viable for reuse.Every regen leaves behind a small amount of ash which builds up in the DPF eventually plugging it. The larger ones can be cleaned but that requires disassembly and then cleaning at a approved facility. I'm not saying to never buy a DPF equipped tractor but if a smaller machine without a dpf will do the job for you why put yourself through the added expense?
No shop vac's allowed and no hefty bags either.....
Conversely, a larger, well maintained machine with proper maintenance documentation is also very viable and why pre Tier 4 units are in demand and hold their resale value extremely well.
Why I keep both of mine, really for no other reason. Love to have a new machine (not the payment book) but not gonna happen.
When I sold my 105X last year, I got top buck for it, no questions asked. It lasted less than a week.