Buying a 2010 Honda Civic Sdn, and saving $1500 off of MSRP.
There was very little haggling once they knew we had the info dealer price. We were also glad to know the factory rebate and when it should be applied, as they "forgot" about that for a minute or two:) We had it clearly in your form and we received this rebate no problem after that. We bought the car (it was actually a friend of mine who bought the car) for about 4% above wholesale. We had initially offered them 3%, so we thought 4% was fair enough ($211 difference from our offer).
Buying a 2008 Honda CR-V, and saving $1000 off of MSRP.
When working on a deal we produced the car cost report letting the dealer know we knew about the rebate and wholesale price. She agreed that the rebates were available and we worked on a price from the retail cost. We negotiated 800 dollars off the retail price and there was a rebate off around a thousand dollars. Over all, it was one of the better deals we have made and the experience was positive.