I've run most of the semis which are available and sadly you can pretty much rank them by price.
Fast and spendy = Z221, A050, DZ03G
Ok and mid range price = R888, V70A, A052
I don't really rate the AR-1 because it's not cheap enough for the performance level offered. Yes, they're much cheaper than A050 but V70A can be had just as cheap and is a much faster and more predictable tyre.