I have a Roland Quad Capture and it is very good.
Advantages:
- good driver support
- pre-amps are very high quality (they're the same as the ones used in Roland's more expensive interfaces)
- automatic gain setting is a huge time saver
Disadvantages:
- no button to switch between headphones and speakers; have to pull wires out the back for headphones only!
The Octa Capture has this button but is a higher price bracket.
Overall from what I've heard there isn't a lot between the Focusrite and Roland products; they are both excellent.
If I didn't have the Quad Capture and was looking for an interface today then it would depend on my budget.
On a lower budget I'd buy the Focusrite, on a higher budget the Octa Capture