It will come down to if you like the curators and share their passion for python development.

pythonweekly.com is awesome, but that doesn't mean it can't be improved, and competition doesn't hurt.

Usually, yep!

A rising tide lifts all boats, and the increase in newsletters is validating them as a viable option for hesitant subscribers.

I run several newsletters (most famously http://javascriptweekly.com/) and I'm delighted to see all of these new *Weekly newsletters (although, admittedly, I'm kicking myself for being too generic with the 'weekly' suffix) because they're helping to validate my entire business model and subscriber #s keep leaping up! :-)