Hey Mike, performance wise I don't think you will notice anything between the FS/FS2. I can only comment on the FS2 as I've recently built and raced one and it really is an excellent chassis, I'm dead impressed at how well it worked out of the box and I'm excited to see what it can do with further setup!
If I'm right about the FS/FS2 being so similar then it's safe to say you'll love the standard FS.
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