I like to buy Keysight, because I do not only get great value but also great customer support, as in this case with an exchange. In addition all my Keysight instruments are nicely integrated with BenchVue. On top of that, I did not pay a full price for the two E36103A. And lastly, if I want to sell a Keysight instrument down the road, I am getting usually a real good amount of money, even if the instrument is may be 10 years old.
Well, back on topic, I just did a few tests with my replacement E36103A and it is just perfectly in specs.
Here I measured the current stability at 2 A, Only 1.25mA Pk/Pk over 2600 readings in 4 wire sense mode.