Coming from delphi - looking for an IDE - willing to spend money

[Luis M. González]

I suggest checking out PythonCard.
It's a GUI builder based on wxPython and it's very easy to use.
It offers the basic functionality of Delphi or VB, letting you drag &
drop widgets on a form.
This visual way of dealing with widgets authomatically creates a file
with the form and its controls description, and the events associated
to these widgets are writen in another separated file as simple
functions.

http://pythoncard.sourceforge.net/