I just bought the small one of these used, and it's awesome except for the lack of tap tempo (the strum tempo function isn't great) and the ability to load multiple TonePrints. This fixes both those complaints.
Premier Guitar is thinking this'll be about $250; that's much more reasonable price-wise than a Timeline and stands to unseat the venerable DL4, plus if it's anything like the smaller one it will sound AWESOME. Dedicated tap tempo and looper buttons are always a plus, and the TonePrint stuff is actually really cool and lets you get sounds you couldn't otherwise get with the stock controls on the pedal (like a U2-style dual delay, a sort of "shimmer" delay setting, or even turn the entire pedal into a Tri-Chorus!) and you can add them either with a USB cable or by using your smartphone... which actually works great, and I just did it.