The Russians are still using Space Capsules too, but I digress. The Buzz Feiten and Earvana nut are vast improvements over the standard fret placement, but at best they don't fix the problem, they just make it less of one. The Buzz Feiten System makes a better attempt by actually moving the frets and modifying the scale length whereas the Earvana Nut tries to fix the scale and chordal differences while doing nothing to fix the problems; the fret placement. The True Temperment treats each string path individually, hence the funky design. From those in the know that have played them, the visual aspect is the only bad thing about it. It seems like bends would have crazy pitch shifts, but appently they don't. With me, my form and technique or lack thereof, are my biggest inhibitors, not where my frets are located. With the recent thread of 5 favorite guitarists, none of them are on there because their frets are in the right place. There on there because in our opinions they are badass players first and foremost. If there was a such thing as a perfect guitar, you'd still have to play it.