Its funny you ask actually, you can find them all over the place, there are a few areas that sell the top of the range version, but they are also usualy very high maintenance and tend to make this very annoying whining sound
Ive tried making adjustments to correct this, but ive noticed all of them start doing it over time, i find the easiest way is to trade them in for a newer model when the problem first occurs
Turns out its the most expensive mod ive ever added