>Hi,
>
>I use an external USB hard drive as a way to backup my PC (in addition to the cloud backup). Currently, I have a WD My Book external drive of about 600 GB. It still works but a little slow. Plus, I would like a newer (quality wise) and larger size. I am looking at 4 TB USB 3.0 drives (on Amazon). The choices are Toshiba, Seagate, WD. All have tons of reviews.
>But they all are not SSD. The only SSD I find is Samsung, twice as much in price, and half capacity (2 TB).
>Do you recommend to spend more money and buy a 2 TB SSD or go for a larger conventional drive?
>
>TIA

For specified "only backup", do not go to SSD. If you previously were coping with 600 GB, 2 TB might be ok for next 3-5 years. For added security you might go for 2 alternating 2 TB HDs, but at that low level casing and electronics will hitch the price. So go with 4 TB, every 3rd backup use 600GB and replace with 2nd new HD that if missing speed irks you again.

If you boot from external disk, SSD makes sense again...