After umming and ah-ing for months I splashed out on a 70-200mm f2.8L IS II last night. You only live once, eh?
Next stop an EF-S 17-55 f2.8 IS, then a 7D. Then I'm done. Apart from an extender..... and a decent Macro...... and a wide-angle..... and a big aperture prime..... and filters for all the above..... and a decent tripod.....
Awesome artwork, do you have a higher res version to see more detail? Your photo of it is really clean.