I'm toying with the idea of getting a Catleap monitor as a second screen for work. At 2560x1440, they require a dual-link DVI adapter. Apple sells a Mini Displayport --> Dual Link DVI adapter for $100. Monoprice and others sell the same adapter for about $65 or less. The reviews on amazon are all over the place for both the Apple and 3rd party adapters. Is anyone running a similar setup? Any problems/recommendations?