Thanks. I appreciate the help. I haven't heard about Evorim at all, but now with the help of google search I found it. Its good to see @MT is home to new security software even if you're a lone developer or part of large organisation.TinyWall has been improved. Current version is 2.x.x. It is still default deny. I wouldn't say massive improvement over v. 1.x.x, because the GUI is still essentially the same. Bug fixes primarily.
I'd say you will still prefer free version of Sphinx over TinyWall.
There are other good, basic firewalls out there - like Evorim.
Really good, stand-alone, free firewalls are few and far in-between.