The Ipswich firm's deal for the 300,000, six-station PrimaPlus is its second such purchase in three months.
Managing director Mike Underdown said: "We were so pleased with the 25% rise in efficiency from the first Muller, we went for another."
He added that the main reason for opting for another Prima was its Amrys (automated makeready system), which makes switching between jobs easy.
"We can interrupt a long run to fit in an urgent job and then switch back again at the touch of a button," said Underdown. "There is almost no loss of production time because the machine remembers the previous settings."
The kit will replace an old Muller Martini in the summer.
At the show, Underdown visited the Heidelberg, KBA Mitsubishi and Komori stands in search of a 10-colour perfector with reel sheeter.