Buying a used machine...I need your opinion!

Hey everyone. I'm new here, but have enjoyed looking at the forums for a while. I've been looking at upgrading from my Brother Innov-is 900d and found a machine this morning at the Brother dealer in my area. They are willing to sell me a pre-owned Brother Innov-is 4000d with a one year warranty and free classes for $2000 + my trade (which they said would be worth the $600 I paid for it a year ago). I'm thinking that this is a good deal, but I would love your opinions on it. It looks like a very nice machine and has all of the accessories and cases with it. The one thing that I'm hesitant about is that it has a pretty high (or so I think) stitch count. They said it has 25,134,000 stitches. They have serviced it and say that it is in excellent condition. I asked them to put my name on it and I would pick it up in the morning, but would love to have your opinions.

Thanks in advance for your advice!

Leigh Ann