In my A/B comparison of a 315ce Jumbo with a 314ce GA, and ...
My A/B comparison of a 615ce Jumbo with a 614ce GA ...
(All 4 guitars are approx. the same age and all have fresh sets of as-delivered from the factory Elixir 80/20s of the factory standard gauges.)
... in both comparisons, I found:
The Jumbo adds wonderful body and lows, and lacks those shimmering highs present in the GA.
The GA is (of course) missing the lows the Jumbo can achieve, but adds that wonderful signature Taylor high end swirly shimmer.
Question #1: With regard to those swirly shimmering highs, is it the shape (GA vs Jumbo) that brings out those highs so beautifully on the GA? The GA bracing? The string gauge (.012s/GA vs .013s/Jumbo)?
Question #2: The lows from the Jumbos are intoxicating, as are the shimmering highs from the GAs, is this one of those unavoidable trade-offs where a person has to pick and choose which attribute (lows vs highs) is more important to them?
Thanks again for your experiences and insights!

-Gary K