To get a good quality charger, something that would be used in a shop, you'll be spending the same as a bigger PD converter. I have an old wheeled charger (Exide) with a 200 amp start function and it is still serving me well. I sometimes have a Schumacher, typically a garage sale item, sitting around.
If it was me, I'd go the cheap route with a mid level Craftsman or Schumacher or pony up some bucks for a PD converter.
IMO, the best were those old AC-Delco shop chargers where a guy could dial in voltage and amperage. Most of them have long ago bit the dust, probably due to the weight (some were cast iron).
Another alternative for charging would be to get on the wagon with Mex, Niner, and Landyacht, using an adjustable power supply like the Meanwell.
