i had a GL 4060 and it stuggled with my 6ft tuffline disk . it did fine with my 6ft roto tiller.
i dont see the 4060 i had pulling a 3 bottom plow.
i regreted not getting the 6060 gr L just for the extra 20 hrs pwr . so just keep that in mind when thinking about a hst tractor. i would always opt for the most hp i could get , you lose a good bit compared to a gear drive tractor.