Im using bobs adjustable inserters right now, could you list the differences between the two?

They enable and affect the same game-setting for inserters. So by definition they are very similar. Looking through the code:

• more streamlined UI (in my opinion)
• less pickup and drop-off positions, only 90°, see screenshots (deal-breaker for me)
• max distance is tied to each inserter's default distance
• no researchable technologies
• global setting to toggle off that inserters follow the belt
• all inserters get double the extension speed for their arms, not configurable

I don't see any advantage compared to Bob's Inserters.

thank you harag, the:
max distance is tied to each inserter's default distance
seems interesting to me

@harag

What do you mean by "all inserters get double the extension speed for their arms"? The rotation speed?

Just reading the code, this isn't my mod ;-) The property isn't really documented: https://wiki.factorio.com/Prototype/Inserter#extension_speed

My guess is it's the speed at which the arm contracts when picking something up on the near side of a belt and the speed with which it extends when following an item on a belt.