Depending on your time line to buy, you might want to attend the RV show at Hershey and get prices there. We got a pretty good deal (nope, not that 35%) on a show model and it had options we didn't think we wanted until we started using them.
If you have your heart set on a Tiffin, you could also attend a Tiffin rally. I think there's one coming up in Indiana. People who own SOBs (Some other Brand coaches) can attend if they're interested in purchasing and there's space available.)
15 new coaches were sold at the recent 4-dayTiffin Orlando rally, so I'm thinking people must've been getting pretty good deals there.
And if all else fails, ask Dennis to do your negotiating for you. Sounds like he's a master of the game. (Let me know if you can get us a new Zephyr at 50%, please!)