Have you able to replace the fitting on the Bushranger pump with a standard nitto fitting so that you can repair/replace the air hose.
To answer your second question, The el cheapo pumps from supercheap and the like are pretty hopeless and tend to self destruct rather rapidly when pumping up 4WD tyres.
The "Thumper" compressors from 4WD Supercentre are an affordable and robust unit, These are worth looking at as a replacement for your Bushranger if you cannot use nitto fittings on it.
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