The Aeron is an amazing chair. There's a reason offices that were buying new equipment (i.e. dotcoms) bought the Aeron. I love mine, and I love that it's comfortable.
Also, the same thoughts that justify a great chair (time spent using, durability, etc.) justify finding a -good pen-. I recently got a rotring rapidograph .25mm pen, and it's the pen I've been looking for my whole life. For those of you that think the .5mm is too think and 'gunky', I highly suggest this pen (http://www.rotring.com/en/produkte/tuschefueller/rapidograph...).
Also, the same thoughts that justify a great chair (time spent using, durability, etc.) justify finding a -good pen-. I recently got a rotring rapidograph .25mm pen, and it's the pen I've been looking for my whole life. For those of you that think the .5mm is too think and 'gunky', I highly suggest this pen (http://www.rotring.com/en/produkte/tuschefueller/rapidograph...).