# Upgrading the motors on a SeaPerch ROV - more torque, or more RPMs?

I am looking to upgrade the motors for SeaPerch underwater ROVs so we can carry heavier payloads and more equipment.

My question is, should I look for motors which have a higher RPM and lower torque, or with lower RPM but higher torque to gain a substantial power increase? If the latter, what threshold of RPMs should I stay above to maintain speed?

We are currently running Jameco PN 232022 motors with ~1 1/2" props (same setup as here). They are mainly run at max power as our ESC currently consists of a fuse and a toggle switch.