new to table tennis here, but ive been playing with 729 v-6 and really like it. tag says off+ but its doesnt seem super fast. really enjoy the feeling, soft touch but also feels "dense" for lack of a better word. ive tried a bunch of (relatively cheap) blades in the last year and many feel hollow with more vibration than i like. i have two actually, and core thicknesses are about 1 mm different, so theres that, QC isnt super sweet i think, but they both play close enough for me.
according to the ttblade database site, the only thing close is andro heister, it is limba-ayous-kiri, no carbon tho. seems like limba-ayous-carbon-ayous is more common (ovtcharov )I also use V6 for many years. Can't find something similar.