Sorry if you got the wrong impression, but obviously I prefer this player with Rockbox, because I'm using it

I'm sure you're right, and the fault is mine in that I'm not aware of (or don't understand) all the different features and settings. There's so much additional functionality, it takes a lot of time and effort to learn about it. I'm using the player listen to lectures on the go as I study for the exam, and I really don't have the time right now to dedicate to figuring it out on my own.
Thanks for the pointer. I will look into playing with the bookmarking and update on stop features.