Small trackers like the Star Adventurer, Polarie, etc are small, very portable, have few requirements and consequently have limited payload.
Mounts like a HEQ5 are a different kettle of fish. Doesn't fit in a (small) backpack and is relatively heavy.
Different levels of performance and features AND versatility.
Currently, my interest is piqued by the SW AZ-GTI which, with the EQ firmware, is controlled wirelessly and is compatible with ASCOM/EQmod, so goto and plate solving are made available. Still, the payload will be limited, but it's still at the size/weight of a tracker that's easily picked up in the event of inclement weather or carried when travelling.
So really it depends on how you will use it. Your initial post suggested the former "small" trackers might be suitable, but I can appreciate how requirements and specs can shift with a little thought
