At the end of the day we really need both. The only units being constructed in the central city are "luxury units" which are the same as normal units but with a more decorated lobby for an extra 20%. Most of the units being constructed in the suburbs are expensive townhouses. While the majority of my evidence is anecdotal I know several people who are shopping for entry level houses in Hillsboro who are being outbid by cash offers from out of towners moving here to work for Intel and Nike.