Everyone has their favorite mapper and reasons for choosing. Steve Mason (Mase) has turned a few of my friends Honda builds around, correcting maps by UK tuners that weren't so good. My Evo had a map on from a reputable UK tuner and I wasn't happy so I took it to Mase and watched him work. The car made +50 or so BHP in the middle of the rev range, and I think 410 at the fly compared to 370 before peak power. The car came on boost cleaner, quicker and better than before, idles nicer and it felt like an OEM tuned map.
I know most will say there isn't much point in mapping standard cars, but from what I have read, Honda have done a pretty decent job of the standard S2000 intake and exhaust and there aren't many great gains to be had by putting on £800 JDM items. All I'm looking for is an improvement in the middle of the band and maybe better MPG. We shall see how the tune goes as it progresses.