I switched from using 15 years Palm devices and even the original palm calendar was better - You could actually see a full week. The Maemo calendar is totally unusably. Symbian is not much better, as it seems that no "business" mobile even allows to view all events of a week.
Datebook5 or 6 have been good, I always preferred Agendus despite the bugs. The views (which are extremely important!) and the correlation of adress/contact with event was just perfect.
I really wish that someone could port one of the real calendar applications to Maemo. Unfortunately more people port games than a useful app - the email apps are horrible, too. GPE does not sync with anything else than google (which is not acceptable for business use), no syncML not active sync and the views are not much better...

It is a shame that my old Centro has a better calendar and email app than Maemo. I bought a centro for 100 EURs, don't ask what the N900 cost me (and I still use the centro...).

Is it so difficult to build a nice small calendar application? Anyone out there? I don't even want it for free...