What drives are you currently using?
I feel like on location drives can be lumped into to two categories, fast shuttle-type SSDs and then RAID storage for some built in redundancy that a DIT would be transcoding dailies off of.
For the SSDs, people like the Samsung T7s and the Sandisk Extreme Pros, BUT they will throttle after continued use – something like after 20 minutes or transfer time you will start to see a dip in performance. So I would use these for off load only and not for transcoding.
For the RAIDs I would spec a TB3 OWC Thunderbay RAID 5 – the amount of storage this could buy you may be overkill, but RAID 5 is pretty standard for some added safety in the field. If you wanted to get their RAID 0 or RAID 1 models, you could go with the Mercury Elite lineup of drives, I would just make sure you had a master and a backup!