I got them. They are great. I like my car clean so I got them because of that. But since it started raining a lot more, it works wonder. The water doesn't splash everywhere and it just fits like it's custom, because it is.
I just purchased the weathertech digital floor liners, fits perfectly. They just became available a couple weeks ago. I held off on the Infiniti rubber ones since the 2nd row hump is not covered (when I asked the dealer parts dept). I've always preferred the 1 piece 2nd row.
edit: just saw the OP's date...2009, lol. I imagine he may have already purchased mats by now.
I bought the factory mats from the dealer and have to admit they're a bit disappointing since they don't cover the entire carpet area defeating the purpose.
At first glance, it almost seemed like I got the wrong mats. These wont protect the carpet at all during winters.