Janfz,
Welcome to the iRV2 Monaco forum, and congratulations on your decision to buy a new Monaco Diplomat. We love ours. I hope you stick around the forum and post often.
Concerning your question about Extended Warranties, here are some things to consider...
1. Any "Extended Warranty", like the Monaco Extended Care Plan and others, is really an insurance policy, not a warranty. It is underwritten by an insurance company, and administered by an insurance administrator. The Monaco plan, for example, is administered by Prizm Administrative Solutions Inc. (near Denver) and currently underwritten by Lyndon Property Insurance Co. (in St. Louis).
2. You don't have to buy your extended warranty plan when you buy the coach. You have almost a year to make your decision. If you are going to buy one, you need to buy it before the first year warranty expires to get the best price and the best coverage. Best to allow at least 3 months of lead time, to get it set up and in place before your warranty expires.
3. Extended warranty plans vary widely. Read the contract carefully before you buy. Know the difference between a "Named Component Plan" and "Exclusionary Coverage". For a new motorhome you want a plan that offers exclusionary coverage, where everything is covered except what is specifically excluded in the policy.
4. What you pay for the very same plan (Including the Monaco Extended Care Plan) varies greatly from vender to vender. There is a lot of mark-up on these polices - especially from RV dealers, and each dealer is free to charge what he wants. You don't have to buy your policy from the same dealer where you purchased your coach - you don't even have to buy it from an RV dealer.
5. You can generally save a lot of money on an Extended Warranty Plan buying from an Internet Broker. There are obvious risks to doing that, as you have to pay for the plan before you receive it. If you buy that way, you want to get a plan that is administered by a well known administrator and check out the vender with them BEFORE you buy.
If you don't want to deal with that risk, buy from a reputable RV dealer and pay more. But still shop around for the best deal.
I looked at several plans before I bought and decided on the "Monaco plan". I checked three different dealers and the price for the same plan was more than $1500 apart between the highest and lowest quote. (The dealer where I bought the coach was the most expensive. A dealer in CA, almost 3000 miles from me, was the least expensive.) I ended up buying the very same plan, administered by Prizm, on the Internet for about half what the lowest price dealer quote was, and about 1/3 of what my dealer wanted for it. The plan I bought was
this one. The contract reads word-for-word the same as the Monaco Plan, except for the Monaco logo on the top.