I've been playing a JJ DV Chi as my main tenor piece for many years now but haven't had a chance to try the Gaia yet. Just looking at the pictures it appears the baffle on the Gaia falls away a bit quicker and that piece might have a slightly larger chamber though it's hard to tell how much effect the extended window in the DV Chi has in this regard and how it compares. I'd be curious to hear from someone who has actually spent sometime on both of these and could give a comparison.