Can't wait to hear about your first experiences. Likes and dislikes, well everyone has some. I bought my Sony because I couldn't get my hands on the Iriver in a store. Here it is (maybe was) only sold online at the time I bought my Sony. I haven't had any bad experience with Sony so far, so I didn't have a dislike about it.
And I love your thing about the price matching. I did this in the US, and it worked there, too. Here in Germany, I wasn't that lucky. I got told that the next store selling the same TV for 200 Euros less was too far away (about 30 km) so that they couldn't match the price. Well, for me it was 15 km either way. So guess what....