Nope, but I'm looking for one as well, and we have a couple of those laptops at work.
The Lenovos we have at work are very business-like. Feel very sturdy without gimmicks, with good screen, touchpad, ect... We also have some HP business laptops, very similar. Just solid, not exactly thin and light, but feel well designed.
The Samsungs and the dm4 are designed after the Mackbook Pro, more like versatile entertainment / home / work laptops in a compact frame. All metal chassis, and pretty powerful. I still think they are a long way from matching the MBP (battery life, screen quality, sound quality, and even graphics power not quite there).
The HP Envy 14 is another of those, but I would only recommend them once they have the Radiance screen available. Plus, the finish is a bit 'odd'. But it's very powerful, with good CPU and graphics power, backlit keyboard, decent battery life (especially with the slice add-on), but imo too heavy and bulky to be classified as a 'mobile' notebook. If it's to carry from home to office, I don't think that would be too much of a problem.
Someone on this forums has a dm4, and tbh, It looks quite good for the money. The QX410 / QX310 are basically Samsung's answer, and they look very attractive on paper. Samsung makes good laptops anyway, but apparently they will be offering them sub £800, which is attractive for a metal-bodied i5 laptop. I'm expecting good things from them. That is if the UK buyers don't get shafted as per usual (availability, or prices, or both).
The Dell studios look good as well, especially considering the options and customisations. Backlit keyboards, high res-screen, imo more than just gimmicks and real useful on a laptop.
I'm using a UL30A for my mobile needs, and it does the job really well. But the quality in general, and the power is no match. However, it's real nice to know that you never have to worry about battery life on that thing.
I'm listing mostly metal chassis, as that would be my preference. The laptop market is pretty saturated otherwise, and those are the ones that stand out for that kind of money.
Oh yeah I wouldn't bother with a i7 in a notebook. a i5 would be my choice.