[Seamless Sounds]

I'm thinking of buying a HD800 in the future for it's analytical nature, but I would also like something to complement it. I want something that's fun and warm. Most likely this headphone would have less treble than the HD800. Don't worry about the bass though, (I have an M³ w/ bass boost). Thanks!

 

[Fegefeuer]

HE-500, LCD-2

 

[nikongod]

I thought the orthos were also analytical? Well, I guess it depends on which sub version of which variant you have, but still. 
 
I would go for the Grado RS-1 or HP1000 as a backup to the HD800, although I never actually use mine. 

 

[Seamless Sounds]

You know what... I think I should save it and spend it on quality speakers and acoustic treatment instead of spending it on a 2nd headphone.