Many thanks for posting and letting us know what you have - I'm sure you will have some great suggestions as an experienced Pico user.
Are you also using the waveform library with your forum login?
If there is anything you want to know, please post or email support@picotech.com where our team will be happy to help.
As someone who has access to both the 4423 and the 4425, have you found the extra features and performance of the new model to be useful in any particular areas?
Please feel free to share your experiences with the forum.