IMO, to get accurate data for matching and weeding through cells, you need to discharge around 3A. The charge is less important for matching, so long as it is consistent. Around 1A should be sufficient for 800mAh cells.

I used to store my cells fully discharged between races when I ran NiMh. If stored more than a week, 1 full slow cycle before the race charge cycle.

Criteria for matching, is kind of a mix between all 3. Low IR cells will have the highest discharge voltage. When sorting for stock class, I want the highest mAh above 1.1v. I dont care about total capacity of the cell, but care about capacity that will be offered in the powerband that I am looking for. Generally, a cell that has a high capacity above 1.1v will have a low IR and high discharge voltage for a full discharge. Also, using a higher voltage cutoff cuts down a lot of discharge time from the matching process. I used very different equipment when I was matching a decade ago, (Muchmore CTX-D2 which is a 5A discharge), and cells would fall flat on their face when they started to run flat and IR increased. If matching lower than 2A, you are not getting the data that you need honestly, 3A is ideal to actually have load on the cell so you get a good voltage drop and be able to compare the discharge voltage/capacity in the high voltage range more effectively.