You can read more about TweakTown's Storage Product Testing Workstation and the procedures followed to test products in this article.
USB 3.0 has been on the market for a little over a year. If your computer doesn't already have USB 3.0 ports then you can simply drop in a USB 3.0 to PCIe card. These now cost less than 20 Dollars and provide a great deal of performance, much higher than USB 2.0.
ATTO Baseline Performance
Version and / or Patch Used: 2.34
ATTO is used by many disk manufacturers to determine the read and write speeds that will be presented to customers.
The ioSafe SoloPRO isn't exactly a speed demon with its 1TB platter drive, but we measured close to 140MB/s read and write speed. This is much faster than the USB 2.0 model that reaches peak performance at around 35MB/s in both directions.
ioSafe does offer a SoloPRO with an SSD, but you are then looking at a much higher cost with significantly lower data volume.