aptitude is dangerous - any replacement?

[Vincent Lefevre <vincent@vinc17.net>]

I've just noticed that aptitude upgraded packages from unstable to
experimental versions (just with 'U' from the UI) without any warning!!!
Again.

Is there any replacement? Or a way to make aptitude ignore
experimental packages?

Note: I still want to keep experimental in my sources.list for the
cases where I *explicitly* request experimental packages.

-- 
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)