The X20 is MUCH smoother but be aware that both the Lrp X20 and X12 motors have more power than other brands.
For example, a lrp X20 7.5 is like a speed passion 5.5
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Yokomo B-Max2 V2 MR
Kyosho DB2
LRP Flow, Orion R10, Orion VST2, Speed Passion, Speed Power, B-Fast, Much More CTX, LRP X 20,
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