Stop in for a cup of coffee

Question for the group.
A friend, who has money, is looking at a couple MOPARS.
Both cars are done, nothing to do.
One is a 440 and one is a 426 Hemi.
He reads the Hemi's are some what of a pain have to adjust the lifters and other type maintenance.
Never had one, know little about what the require.
Comments??
Not really that bad to adjust. people are scared of them for some reason.