Never really like hp-Harrison lab power supplies. They were a mixed bag of good to ok. Others like Kepco, Power Designs, Lambda & other similar tend to cost less (brand recognition) and offer similar to better performance -vs- cost. There is little to zero wrong to purchase older "vintage" lab-bench power supplies as they are often well built, quite repairable and built to last unlike many modern plastic wonder techno products that are intended to be tossed if dead or when their specialized internal bits are NLA.
Digital meters are good, do asks the question, does the DUT really need that degree of power readout precision? Essentially, don't discount the actual usefulness of a vintage power supply simply due to it's wiggle meters.
As a rule, lab bench power supplies must be darn near un-bustable, live after being severely abused and continue to function with absolute reliability. That said, bench brewed power supplies can meet testing needs better than bench supplies at times, specially when an entire system is being built and tested.
Question is, does a circuit really need to have ultra precise regulation, ultra low noise, ultra low impedance from DC to daylight to function properly or should the circuit in question function properly within the system power it will live in which can be quite different than being powered by a lab/bench power supply.
Often times, a lab-bench brew power supply that has several fixed outputs can be more useful than a single or dual lab-bench supply.
Stuff to consider.
Bernice