I was going to wait to see what the Rails / Dapol Terrier was like, but when I saw the Hornby SECR liveried version in Ian Allan at Waterloo on Friday, I caved.
I'm aware of its shortcomings thanks to Edwardians many posts, but it's so small, and the photos used to critique it would be 4-5 times bigger than the model itself on most peoples monitors.
I'm well pleased with my purchase, and will now add the Southern liveried version and also Stepney when it becomes available.