The Manfrotto 405 is actually a good geared head, but nobody will ever understand why Manfrotto still insists on its stupid proprietary quick release. Most people I know just add an Arca-style clamp, I never heard any complains about stability issues. You might feel better if you add some superglue between the plate and the clamp or drill some extra holes and add screws to connect the plate and clamp forever.
In the US you might also consider a Majestic geared head. They weigh ca. 6 pounds but they are rock solid, and sometimes you find them on ebay for quite low prices.