Gamebooks / Choose Your Own Adventure / Fighting Fantasy

I was just nosing about and stumbled across inklewriter, which seems a very quick and easy way to get started writing a gamebook, and is the little brother to Ink which was used to adapt the Sorcery! gamebooks. However, there are a lot of options out there. So I thought I'd throw this one open to you all - what have you been using and how does it compare to other offerings.

I'll also maintain a list of suggestions here for ease of reference, so gamebook software includes:

• Twine - probably the best known
• Quest
• TADS (Text Adventure Development System)
• LibroGameCreator
• inklewriter
• Squiffy
• Ren'py - a visual novel engine
• NLBB (Non-Linear Book Builder)
• QML (Quest Markup Language)
• ChoiceScript
• The GameBook Authoring Tool - not free like the others but you can create up to 100 sections for free before having to buy the pro version so you can see if it suits you.

Main link is to 5 Open Source Tools to Create Interactive Fiction which I have plundered for the above list.