Microscope for Silicon Inspection / Decapping

[logjam]

Could anyone recomend a microscope for silicon inspection?

If interested, take a look at my website for decapping resources. I've
collected quite a bit of information on the subject.
Comments/suggestions welcome. Join up if you want. Link is below...

http://www.stockly.com/forums/forumdisplay.php?f=7

The microscope I want to find has to provide better images than these:
http://media.diywelder.com/images3/091205-MMILogo_IMGP2051.jpg
http://media.diywelder.com/images3/091205-RightOfMap_IMGP2068.jpg
http://media.diywelder.com/images3/091205-wholechip_IMGP2074.jpg

I've found two interesting models:

http://cgi.ebay.com/METALLURGICAL-METALLOGRAPHIC-MICROSCOPE-USB-PC-CCD_W0QQitemZ7546614326QQcategoryZ26411QQcmdZViewItem

There are a few here that look good:

http://www.bargainmicroscopes.com/scopesmenu/product.php?id=81&pcat=&pid=

Is there anything I should be aware of?

I want to get crystal clear images of the silicon. Here is a 20 mega
pixel example of what I can get by holding my digital camera to the
eyepiece. Its fuzzy on the right because I had to "aim" at an angle
into the eyepiece to avoid strange hazing. Warning...2mb JPEG

http://media.diywelder.com/images3/091705-ASG-fuseblock-pano-fullres-cropped.jpg

I'd like to also find a cheap indexing head, even if its only one axis.
I'd like to take a picture of a 68000, 6502, 8088, etc. I think it
would be fun to have the whole die on a 30x30" photo at 300dpi.

Thanks,
Grant