I have a Combustion and an ABZ, the ABZ is the superior machine, playability is amazing and build quality best ive seen. However, the Combustion is just a load of fun, again build quality is amazing, sound/playability fab. I did an a/b/c against a Spector Euro5LX and a Roscoe 5 down at Bass Direct and the Combustion won hands down. I voted for the AB1 but I’m starting to think that what you are after is the Combustion...