Started in 2012 with a Giant Defy Advanced 2 as an upgrade to a Scott Speedster. I rode the Defy for 5 years (+15,000km) before my local Giant dealer noticed a tiny crack on the seat tube. The frame was replaced under warranty for a 2014 Defy Advanced 0 frame model. I took this opportunity to upgrade the groupset from the original Ultegra 6700 to a 6800 groupset. Just finished building it up last weekend and tested it out on the smart trainer yesterday!!
(yep, I'm a newbie to this forum!)