I've only seen three episodes with Ten, and he's fine. I really like David Tennant, and he's making some fun choices (oh, and glasses!!!), but I miss Eccleston like mad. Maybe it's because he was really my first. Maybe it's because I prefer my Doctor intense and a wee bit broken - it makes his darkness all the deeper and his joy all the brighter.
On a side note, watching 'Father's Day' while running on the treadmill? Not such a good idea. *sniffle*