I bought a C2D "ultimate" 11" this spring. I'm now looking toward the newer "ultimate" i7 11" MBA. Having played with an i5 version in the Apple Store, I'm struck by the snappier performance and would enjoy the larger SSD. Two questions for anyone who's followed this upgrade path: Any challenges with the TB interface? I'm still using a 24" ACD; I trust I won't experience any problems, but thought I'd ask. Second, is the performance increase noticeable for you? If you had it to do over again, would you wait for the next revision? Thanks! Apologize for the very specific query, but perhaps someone can help me make up my mind. There's nothing wrong with my C2D machine, but I cannot help but feel it's a bit sluggish (especially when docked with the ACD) and would think the new chips would remedy that deficiency.