Django would get my vote.
Like you, I'd been using ASPNET since its creation and then a job forced me to use PHP. Then another. And another. I got to the point where 90% of my time was spent doing PHP and I didn't want to split my time between two completely different work-flows so I just went with it.
PHP, as you may or may not be aware, is a complete scrotum of a language when compared against the relative beauty of languages like C# or even VB.NET. And it's not getting better any way soon. Development frameworks mean you have to upload half-a-million files for each project and it all just feels unneccessary.
So about two months ago I started to look into alternatives. I use Linux now so I bump into Python quite a lot of the time. It looks pretty enough. It's always pretty well formatted (by design) and it has fairly excellent OOP techniques and opportunities.
Then I learnt about the Django ORM so I thought I'd make a quick site with some basic interactive features. I made a secret santa website for my girlfriend's family. Multiple forms, authentication, listing and detail pages and a splash of AJAX. Took me (a complete uber-novice) two days to get functional and the rest of the week to beautify (I'm a slow designer).
Other benefits include its superb built-in caching, a community that really knows how to program stuff, pre-made, reusable apps that you can just plug into your site and go, and python's easy_install and pip that make getting modules so simple. Oh and unlike ASPNET, it'll run on any OS which can make for considerable savings for personal projects.
I've since ported the rest of my PHP sites (and those that I have to maintain) to it and I'm about to start porting over my ASPNET projects. I'm happy.
Databases are pretty much a non-issue in Django. You pick one that's right for the size of your project, plug it in and the ORM handles all the DBIO.
I use SQLite for small-to-medium projects and a MySQL cluster for large projects.