What do you guys think? Is it worth it?

 

It's not worth 50 bucks, much less 300.

Get a mail order tune instead for $100.

 

I don't think you will find anyone KNOWEDGABLE or quick running one of those things. As noted CUSTOM programming can be had for FAR below the new price of those things. Even if the price was similar the Hypertech is VERY limited in capability and more than a few have found less power with them rather than more.