Closing Recommendation
Both machines are capable, but they are built around different priorities. The Bull Grandia has a stronger 100 HP engine, bigger bucket and shovel capacity, an automatic transmission mode, and greater digging and lifting force, though it comes with a shorter warranty, more weight, and a wider turning radius. The Manitou MBL 745 Ranger offers a longer 2-year warranty, a smaller turning radius for tight sites, a higher top speed, and lower maintenance costs thanks to its naturally aspirated engine, but it has less power and a lighter build that may affect stability on heavy-duty tasks. So match the machine to your work: Bull Grandia for big, demanding jobs needing raw digging and lifting power, Manitou MBL 745 Ranger for tighter sites where maneuverability and warranty cover matter more.