Closing Recommendation
Both machines share the same engine, hydraulics and GPS, so decide on the ground rather than on performance. Choose the JCB NXT 145 Quarry Master when quarrying and hard-strata work fills most of your year, when strong force at the bucket is needed to fill in stony material, and when a tougher build protects the machine from the wear a quarry floor causes over the years. Choose the JCB NXT 150 when your work is general construction and light engineering, when sites turn soft in the rains and lower ground pressure keeps you moving, when a slightly bigger standard bucket shifts more per pass, and when mixed contracts need one machine that copes with everything. Remember the AC cabin is optional on both. So match the machine to your work: NXT 145 Quarry Master for quarry durability and hard material, NXT 150 for soft ground and mixed construction work.