Inferno ST-RR: Question on the Hardness of shock Springs

Hello everyone.
Just a quick question. I am trying to set up my shocks. At the moment I am using the #600 oil and the blue springs (medium). I have noticed that during acceleration the back end dives to the point of almost touching the ground (maybe it does, not sure), yet I have no issues with the car being too wobbly.
I thought of using harder springs or a higher grade oil, but I am not sure which one is the way to go. Should I go with medium springs and #800 oil or #600 with the harder springs (red)? I am told that most of the work in the shocks is performed from the oil rather the springs but I am not sure to which extend.
Cheers!

[George16]

I'm using 450 oil with red springs in the rear and 500 oil with blue springs in front. I love this combo and works well with my driving style.

[simplechamp]

I would try the stiffer red springs in the rear, if #600 is pretty close to 60wt oil then that's already quite heavy IMO

I think #600 is closer to 40-50wt oil, as I saw somewhere that the 60wt is similar to the #900. Problem is that the systems calculate viscocity in a different manner so it is not easy to perform a direct comparison
I think it would be better for all of us if the companies had stuck with one system
When I was looking around the net I found out that even the W with the WT designations vary considerably among different brands..
Given that, you think is better to go with different springs rather changing oil? I know it is easier to change one variable at a time so that we can assess the results better.