How are you modernising your as400 applications?

Following from the long discussion re PHP/SQL/App Modernisation,

I would be interested to find out how most of us are going about the Iseries
Application Modernisation process.

I have always been a fan of the route where you keep your existing RPG
business logic, wrap it up in APIs that you can call as a stored procedure
via the database, and create a nice browser from end, using Java or whatever
else you prefer, but also use some direct access from front end to DB via
SQL. That way you dont have to use the big-bang approach, but can modernise
as and when.

Just interested to find out what others have done or prefer, have no
personal axe to grind