Lifetime or current?
I've bought a lot of gear for instance, mpc 2000, then an xl, tons of midi controllers. Then I learned how to fix them and sold them recouping losses. For a minute I'd get shotty gear, rebuild and resell.
It's funny when you know your shyt then talk to sales people.
"This Yamaha is great! Blah blah blah...."
"
Is good, the action on the keys isn't good. The sound module is the best they've ever had though"
"The key action on this model is great it's flawless, especially if you actually play piano.
You are actually trained and play piano, aren't you?
?
"
Underneath 'the plastic' keys are a little plastic button, unlike a traditional piano where the keys hammer the strings, the point on the bottom of these plastic keys hit a plastic button that triggers the module. It's a known problem that plagued the last couple series within the last 2 or 3 gens of these Yamaha keyboards and controllers. The action is great now, as it's designed to, but once you get it home when you really put it to use, overtime the velocity is lost. Your either going to get dead keys or key's that are hyper sensitive. A lot of mid range and higher ones use rubber, but they also have more efficient keys that vary in weight. Yamaha released a series of weighted keyboards in this gen but at the time the module wasn't up to par. If they do it with this module you'd find little reason to get a Roland or especially a korg."
The sales man just turns and walks away