If you really don’t care about speed: https://www.amazon.ca/Crucial-PCIe-NAND-NVMe-3500MB/dp/B0B25P44CL/
If you care about speed but also on a budget: https://www.amazon.ca/WD_BLACK-SN850X-Internal-Gaming-Solid/dp/B0B7CQ2CHH/ or https://www.amazon.ca/Sabrent-Internal-Extreme-Performance-SB-RKT4P-4TB/dp/B08VF99PV8/
If you care about speed: https://www.amazon.ca/Crucial-T700-Gen5-NVMe-heatsink/dp/B0C3KFGPT8/ (added because crazy cyber Monday deal)
I bought a few last year and settled on the Sabrent for my 4TB storage. Been solid.
As for external enclosures, Sabrent has a decent 10Gbps one, so does UGREEN. I picked up a ZikeDrive Z666 USB4 enclosure because speed. It runs hot so I had to slap a block on the SSD (they claim it fits them but it’s hella tight) which helped keep it at 40C. Orico also has some decent enclosures.
But if you’re dead set on a HDD, I’d go with https://www.amazon.ca/Seagate-Barracuda-Internal-Drive-3-5-Inch/dp/B07H289S7C/ With traditional drives, it’s more about finding the cost per GB than anything. It looks like 8GB is the sweet spot and then scales up. Scaling down likely means paying more for less.
Lastly. One thing to note, Samsung has no warranty system in place for Canada and will lock you in an endless loop of no help by pushing you to the US system which will tell you can’t handle Canadian warranty claims. Just FYI.