Great review
Thanks for this review Tom, though I'm a bit disappointed that you skipped over the UD3H, which is the board I ended up buying at a reduced Boxing Day price. $140Cdn, and I was rebated $30 of that. Not bad at all, considering the Canadian dollar is at the lowest exchange rate it's been in years.
My currency calculator says that the $110Cdn final cost was a mere £60.54. Try as I might I can't find much different between the two boards. They are feature-for-feature identical, save for two things: the red colour of the UD4H is blue on the UD3H, and the less expensive board has fewer power phases.
Since for me this is an upgrade from a 3-year-old GA-55H board, I'm quite happy with it.