Phrygian Dominant!!! I love the sound of the harmonic minor scale and that of the phrygian dominant mode.When playing in major keys I like Phrygian or Lydian mode. Lydian is a favourite of Joe Satriani. The Blues scale is nice too, my influence from Slash I guess. He used that scale in box shapes for almost every solo. However, the melodic minor and diminished scale are great too. Nothing better than a diminished run. And of course swept arpeggios. Now thats something that Im still working on. I've returned to my Strat for I feel the shape suites shredding better. The Les Paul is a bit chunky, but very soulful, so I use those for different styles. I think its the bridge. The Les Paul is more angular, whereas the Strat seems very flat lying, which suites sweeping in my opinion. If I ever get the money I would like to get an Yngwie Malmsteen Signature Strat with scalloped fretboard. That would be nice, also with the better pickups. Well thats my opinion.