Look at the sound rating when you compare pumps. Last time I did a comparison the Viair was near 80db. The Thomas that came with the HWH leveling was significantly quieter. Also look at duty cycle, not all are rated at 100%. There is a reason some are more expensive than others.
Jim and Jennie, Cats=Bittles and Potter, 2000 Dynasty 350 ISC
2013 Silverado 4x4 Towed with R1200GS in bed.
PROV23:4 Do not wear yourself out to get rich; have the wisdom to show restraint.