The Castrol stuff is really good...we've used it before.
We've run AP PRF for the last 4 years which is the same thing and a lot cheaper...we have it in stock for $41.95.
You won't have a problem with either one of those....I would look at other factors....i.e. calipers, master or lines.
What are you running for lines and is the master stock and what type of bike?