Only reason why wiki is not recommending ipf is because of reinforced ink policy, hopefully that will get canon attention since one month is totally unacceptable
100% correct. While there have been quite a few teething problems for the IPF5000, the image quality is superb. In regards to every other problem, many have workarounds and Canon is presumably planning to fix the reported software bugs.
The recommendation regards specifically Canon's refusal to offer a reasonable warranty for ink cartridges, coupled with the multiple reports of ink cartridge failures at what appears to be an abnormally high rate. If Canon changes their policy and fully stands behind their products, the Wiki recommendation will change as well.
A secondary concern is that the two printheads ($600 each list price) are also covered for only 30 days by the warranty. If problems develop (and it is still much too early to see if they will), your new printer could basically become a paperweight. If Canon has no more confidence in their products than this, why should the Wiki be confident in their products--especially given the documented problems with software, firmware, and knowledgeable and timely support.
Just today, we have received another report from a poster that has a banding problem. Canon support has been out to try to fix the printer FIVE TIMES. The printer is basically DOA, and the poster reports that after two months he still isn't able to use his printer. Assuming this is a legitimate report (and I have no reason to doubt that it is) this is certainly a damning indictment of Canon's tech support system and policies. It certainly dovetails with the experience of Jim H WY, the longtime poster who discovered the fix to "Banding in the trailing inch of prints from the Cassette." which Canon had no clue about. He had to wait for weeks to get his printer fixed since the parts (which ended up not being needed anyway) were "backordered".
http://www.canonipf5000.wikispaces.com--John