FogBugz compared to OnTime | Has anyone used both FogBugz and Axosoft's OnTime and care to offer an opinion? AxoSoft has a big [feature comparison chart](http://web.archive.org/web/20090522134148/http://www.axosoft.com:80/products/ontime_competition.aspx) but I'm also interested in more subjective thoughts on things like ease of use and stability.