Before I splash out the big bucks for a DL3021 (or similar) I might start with a much cheaper option (there is also a case available).
I want to get a programmable electronic load. There are a bunch of options from Rigol. I’m thinking maybe a DL3021, such as this one available from AliExpress for $742.58 + shipping. Should probably do some research and see what is available from other manufacturers.