v1.03 and or v1.04 are the latest offerings, either is fine.

Any Digital is more precise than its analog counterpart. Precision is desirable for throttle as you use it constantly; repeatable accurate results are the goal. The 6635HB is a little faster than the 5475HB sport digital.

Remember your listings are for sport digitals with 3-pole motors not our premium digitals with coreless motors, there is a difference.