The +6 INT gives you an extra +3 macc, for +7 macc total.
Goliard is +4 INT and +2 macc. That's +4 macc compared to the +7 from these.
If you don't want to spend the money though, augmented HQ Zenith Pumps can get +5 macc, which would be +6.5 total macc with the +3 INT on them. Would beat Goliard but is still 2nd to these.
