Not the Propel, but I have the TCR Advanced (not SL) from a few years ago built up with my own parts choices. Great frame. No complaints. Even though my frame was bought used, an LBS that carries Giant was able to get me a replacement head badge under warranty. Giant makes really, really good stuff under their own name as well as under many others. It doesn't get the same publicity on the 41 (this forum) as do Cannondale and Specialized, but the product is IMO very bit as good.