Game34083 and its different cores

Recently I came across various game core of version34083



Say 6,8 and 59.5 MB



I am confused now which one to choose and whats the difference between these three.

The 6,8 MB core is without debug symbols -> so you can hardly edit it with IDA (for example).
I'd rather use the 59,5 MB core but the 6,8 MB will just work as well.

Kind Regards