well im gonna go with bucket, although i think finck does a fine job usually... the blues sounds great and i love his scom solo... but buckethead can do whatever perfectly, he plays nightrain like a beast and his rhiad solo is awesome too... and although it should be longer, his KOHD solo is so nice.
i think finck deserves more credit than the guy gets... the only song he really disappoints me on is november rain... but i kinda cant blame him for that... those are huge ass shoes to fill with that song, i like fortus's work better with NR.
while at the same time, it can be really hard to compare bucket and finck, theyre pretty different. i mean finck did stuff with NIN and bucket worked with God Knows how many people and did something new and different with each one. so i guess im more open to what bucket does.