I am super excited for Chez. If we see the speed we are look at a possible doubling in speed.

There is certainly a reason why he has stuck with Gambit and not my beloved Racket. This seems perfect for using Racket's macros. I just don't know Gambit's Macros well enough to compare them to Racket.

Here is the Bench Marks for Chez, Racket and Gambit https://ecraven.github.io/r7rs-benchmarks/