3PV is technically a level lower than MTS in terms of price point and features. MTS should more or less be compared to a 4PV. MTS technically have a advantage in terms of response than futaba when comparing the fastest protocol. However to enable the faster response on MTS you need to use a programable or SSR/SSL comparable Sanwa servo like SRG-BLS. For average racers, increase in response on the radio does not translate to better performance most of the time. Difference between 2ms to 5ms average latency is not great enough