I was kind of set on AD08's again, however looking at the R1R / NS2R / RSR I might be tempted by 4 of those instead as they are a little cheaper & seem to offer the same level of performance.
I think the ad08s are slightly better, but once up to temp i found the rsr very good. Depending on the chassis setup and where you use the car you probably wont notice a differnce. I think you can get rsr's for under 60 quid on my tyres.
I had AD08's and now have R-1R's and to be honest there isnt much difference in the performance, both have great grip and feel to them in the dry but I would say that I think the AD08's are a little better in the wet.
brilliant tyre for the money and as already mentioned seem to last a lot longer than others.
I had a set of 195/50/15s on oem itr wheels spent the whole day at snetterton and apart from a bit of mottling ( as expected ) they were still like new. I was that impressed i have now gone for the 205/50/15s
I never do many road miles tbh
What ever car I have I usually do the recommended by manufacturer. I can't remember what the ek9 pressure is but guess at 30psi ish?
Sorry not much help but search for recommended by honda.
Track you want these things down to like 23psi cold and see what the hot pressures come out like. Each track and driver are different in that respect.