There are many considerations, some not obvious for a new owner, when financing a large maintenance intensive item like a RV. The potential benefit of new is a warranty from a reputable manufacturer to help with immediate maintenance/repair issues. If your loan payment stretches cash flow even in the slightest amount, and you rely on others to perform maintenance, be very careful from whom and what you buy.
It is not a matter which RV you buy, Prevost, Newmar, Jayco, they all will have items that need to be addressed. For new, the first year is typically the most intensive repair/maintenance period.
We have a 2024 Newmar which has been to various repair facilities for warranty and general maintenance work many more time than I care to admit.
Our 2024 DutchStar is currently at Cummins chasing persistent coolant leaks. This is the third attempt to repair, first by Cummins shop.
Used RV is another ball game completely. You are literally on your own as far as repairs. If you are handy with repairs, and willing to invest your time knowing/repairing the systems on the RV. You can probably get a reasonable deal on a newer unit. Many low hour/mileage units exist from unhappy owners
There are plenty to chose from on the market. With no warranty, you will want to test and inspect all systems on the Unit prior to commitment.
Hope this helps.