Triple braid? I dunno? It was the manufacturers recommended splice, and it was a real pain. It was like 5 years ago I spliced it, and sucked so bad I told myself "never again!" I stuck to it too, I had Nick splice some for me about a year ago, I wanted nothing to do with it.
Tachyon was no more difficult than velocity, but I consider myself a novice with double braid. Can do it, but not real proficiently.
Ive been thinking about doing some 16 strand only because its been a while.