The quality control isn't something I have any first hand knowledge of though I can talk about their looks;
The Padi looks ok in my opinion.
I like the cases, bezels and bracelets on the others, but the dials look a bit odd to me, especially in the colours they've used. I'm really not sure about the greeny blue dials. Then again I never really got orange monsters. I'd like to see these watches in person, but probably to have a closer inspection as to why they look a bit odd.
Then the last watch, in gold - its grown on me as I've been writing this. I don't have any bling but there could be worse ways to start a collection of bling than owning this. Probably not a watch I would go for however I can see it having a big appeal in some areas of the world.
I don't know how much these cost though, I would hope they are less than£300?