All good advice above. That budget will land you a very nice coach. Would stay away from Thor. Lots of bad press on quality issues. Since many items in the house systems and chassis are generic across many brands and years, the bottom line is quality control on the assembly line if there is such a thing, maintenance and a honest seller.
I personally would go with a seasoned one owner coach. Try to buy direct from the owner. You should get a better idea of its history and quirks. No, we didn't follow our on advice by buying a new Winnebago 40R. Different circumstances... We plan to keep it many, many years until we can't travel any more. Then someone will get a good deal on a one owner, maintained DP.
When we sold our '07 Endeavor the new owner got a 20+ page print out of how to operate every system, maintenance records and every item replaced or fixed. We did a three hour walk through. Since we had nothing to hide, we were in contact for several months after the sale to answer questions.
Some units are traded in because of problems. I can guarantee the dealer will not disclose those issues even if they know about them. In buying an RV new or used, the motto "buyer beware" is extremely important. Above all, hire a mobile tech to do an inspection. If you have the ability, take it to a mechanic and have them check everything out. Remember you are the customer with the money. Don't be pressured. You have lots and lots of time.