Of those bikes, I like the San Quentin most — I’ve never ridden a Marin, but I’ve heard good things and what I’ve seen online has been great. However, you’re probably more likely to be able to get your hands on a Talon before a San Quentin is available (unless you’re buying used). That said, I’ve own two Giants and absolutely loved them, so I don’t think you can go wrong with a Talon! The SQ will be more aggressive, but if you’re riding mostly near where you live, any of those bikes will be great.