I only bought Unearthed Arcana this year, and I think that I'm still in the first category even if you count 2003 as well.
For some reason, in 2004 I've been spending less but actually playing more! I've been very close to buying new books several times during the year, but I always changed my mind... from what I've seen around, the new Complete and Races of series were worth little for me, since I already have enough character material for the next 20 characters or so, and the new content was often questionable...
Actually those books series have (weird enough) made me nostalgic of 3.0, and I am planning to buy some oldies instead, such as the Rokugan setting books. The Libris Mortis is however still on my buying list when I find it at discount.