Here is a live coverage from gsmarena.com http://www.gsmarena.com/live_coverage_mobile_world_cong...
I pretty much liked Samsung S8500Wave and I8520 beam which both have superb displays and 720p video recording.
The first one comes with Samsung's new Bada OS and the second one comes with Android and a bulit-in video projector.
On HTC side i liked all the 3 phones announced,
HTC Desire with a great display and a 720x480 video recording camera + Android 2.1 and a great design
HTC Legend which is basically an upgraded version of HTC hero and finally HTC HD Mini which is the second HTC phone with a capacitive display.
I pretty much liked one of the LG phones with intel Atom CPU but gsmarena reported that it had a laggy and sluggish UI.
BTW just edited my post,HTC desire doesn't record 720p videos,it records with 720x480 resolution