i had the kdws. nice tire (certainly better than mxv4), reasonably cheap, wore well for 20k (i sold the car). good on water too.
the high perf tires will always wear quickly, but boy are they worth it....
i have the potenza re050 on ym car (came stock), i think they are also decent, but certainly nowhere near pilot 2, or pole position. if cheap they would be a good choice.