So my personal experience is: CalDigit is what I'd go to for reliability. Plus it's also a good deal smaller to boot.
Both have USB-C ports (15W) and USB-A ports (7.5W) - all 10 Gbps.
Both have 180W power supplies.
Both are Thunderbolt 5 which means they can support USB 20 Gbps from the Thunderbolt 5 ports (if USB tunnelling is disabled).
CalDigit Element 5 has 4 more USB 10 Gbps ports (2 USB-C and 2 USB-A) probably from an extra internal USB hub. The front USB-A port might also be connected to that hub which would make it very slightly slower (not noticeable) than a port not connected to a hub.
OWC USB-A port is not connected to a secondary USB hub (this means it probably has the same USB 10 Gbps performance as the Thunderbolt 5 ports).
OWC Power Delivery to a laptop is 140W max though some laptops are limited to 100W.
CalDigit Power Delivery to a laptop is 90W max.
CalDigit might be smaller but the upstream Thunderbolt connection is on the side which would effectively make it wider by the bend radius of the cable.
I would go with the CalDigit for the extra ports.
Is that possible on a Mac (other than by sticking a TB3 device in the chain which only made sense with TB4)?(if USB tunnelling is disabled).
Thanks for the reply. What Thunderbolt 5 drives / devices do you have?
I have considered the CalDigit TS5 and the TS5 Plus, but think these are too big and overkill for my MacBook Pro M4.
I think CalDigit has done it's homework and design on these to come out on top. Expensive but probably worth it
I don't know of any other method. It would be nice if there was a way to do it in software somehow.Is that possible on a Mac (other than by sticking a TB3 device in the chain which only made sense with TB4)?
I don't know these models specifically... but overall as a brand, I've come to trust Caldigit docks (I still have a TB3 dock of theirs) more than OWC.
I feel like something has happened to OWC as a brand over the past 5+ years. Early days, I felt they had a good reputation for making great, after-market, enthusiast Apple gear. It wasn't cheap, but it was high quality. And you could trust its reliability.
Somewhere along the way, it feels like that's changed. Maybe starting with their TB3 docks... I frequently hear about issues with OWC's more recent offerings.