The build quality is pretty good. Key action is always going to be subjective though. It'll hold up to road use.., keep in mind the TR is Korgs budget line, so the quality isn't going to be comparable to their top synths (BUT) The TR series does have a good build and the buttons feel fairly solid. The key action is typical non weighted synth action. You're not going to get any piano feel from the keys, but they're better than the PSR line. $1,299 is a great price for a budget 76 key workstation too. Plus with the Korg TR line you have the option of "adding sampling". Some other budget line workstations (cough, cough YAMAHA MO SERIES) do not offer any expansion at all. Some people are a little iffy about the 62 note poly on the TR's but keep in mind the TR's synth engine is 2 elements, where you'll find others such as Roland and Yamaha can run up to 4 elements (in turn making it easier to blow your poly in a mix)