As a repeat customer of AudioRax (4 different cabinets and some hardware over the past few years) I would certainly buy from them again. I am currently using a 3u flat-faced 3-bay cabinet but I still have the 4u slanted 3-bay cabinet like Scott has (mine is black however to fit my aesthetic). I might use it again later. While I prefer the slanted version as it makes accessing the radios easier, it adds to the height, that in turn makes the monitors too high. If the monitors are not your all-day viewers that might not be a big issue.
I might consider a 3u slanted cabinet, that would be about 1.75 inches shorter that the 4u and fit my panels. The monitors might still be too high for me however.
AudioRax does great work, has great products and fantastic customer support. They serve a niche market but will make what you want for a price.