Get some Koni Yellows, cheaper than the stockers plus they are adjustable. I got mine from shox.com for about $100 each, that was cheaper than getting the crappy ones at Checker.
they might be cheaper the stock R1's have harder rebounds then any other shock our there right now (or is that compression). In anycase, I have not seen any test to show that anything is better then stock right now. This does not mean i have not heard of people saying that other shocks were not tighter thru the good old butt detector haha 