SAMSUNG OMNIA
CNET video review here
Engadget Mobile hands-on review available here
Brighthand review available here
SONY ERICSSON XPERIA X1
Paul at MoDaCo reviews the X1 – photos, videos, screenshots – here
Engadget Mobile takes it for a spin and has lots to say here
Video unboxing here
Detailed review available here
HTC TOUCH DIAMOND
Detailed, size comparisons, videos and lots of photos from PocketNow here
CNET video review here
PhoneArena review with good size comparisons here
Sprint Touch Diamond review by InfoSync here