I've read several reviews of the Citiscape Downtown, but haven't been able to find any comparing it to the HD428. The Downtown is on a 24 hour sale for $40 here: http://bensoutlet.com/products/citiscape-downtown, bringing it into a similar price point as the refurbished HD428s. They'll be used mostly for listening to rock, pop, and alternative rock via a computer for several hours, and unfortunately the CALs are out of my price range. Noise isolation is also something I am concerned with, but both seem to do well on that front. Thanks for any thoughts on how these compare!