Didn't manage to go to many games in the first third of the season, but when I did get to some Henderson surprised me most out of our new signings. I thought he looked far better in person than on the TV, he worked hard, never hid and has a fantastic technique.
My issue with him is aside from that first positive impression, he hasn't moved on at all since he has been at the club. He reminds me of Rodwell in the sense he looks neat and tidy enough, but doesn't have any real impact on games. Perhaps it is harsh to compare him to Gerrard, Rooney, Owen etc. but at the age of 20/21 they were dominating games. For the price we paid for Henderson, I think it's fair to expect him to be far nearer to that end of the spectrum.
However, as mentioned several times on this thread, he is young and still settling in. He also appears to have an excellent mentality. Hopefully he will have a touch of the Ramires' about him and really come on in his second year at the club.