I consider to play with WebKit Reporting once again. What is really cumbersome with Reporting in general, is layouting. Therefore, the choice of my next reporting engine would depend on the availability of a graphical layout editor. It is not important, if all the report can be built with it, but for quicker and more comfortable layouting a layout preview is strongly required.
Up to now, I use ReportLab with OpenOffice Report Designer. Report Designer I only use for layout purposes - all the rest I do by directy working with the code, i. e. I build my layout with Report Designer, export it as .rml and push the latter to the directory of my custom report module. I would like to continue with this procedure using WebKit as Reporting Engine. I need not know how to set it up in OpenERP, but if there is any possibility of coding with layout preview.