I have been a fan of Class::Std but if I was to look at another module I would consider Class::InsideOut.

The more I worked with objects, the more I believe in using inside-out objects. It keeps you and your co-workers from being able to do stupid stuff(like directly accessing object data).

I also like to work with get_* and set_* methods rather than one method that can do both. A number of method generators don't have that option and don't play well with inside-out objects, relying more on blessed hashes.

Another issue is whether your object is going to represent data from a database. There are quite a few distributions for doing that, but I have not been happy with most of them and ended up writing my own. I have recently gone back and took a look at them again and one that is striking my fancy is Rose::DB::Object. The document and syntax is reasonably clear so I will probably start looking at that seriously.