Let me quote his conclusion:
This concludes my hands-on preview report of the Pentax K-5 semi-professional APS-C SLR camera. It combines what may currently be the best APS-C sensor with a camera which has almost professional grade attributes but in a package which pleases the outdoor and street as well as the enthusiast photographer. It shares the genes of the applauded K-7 and improves on the three points which could have been considered its only weakness: ISO performance, autofocus speed, uncommon sources for blur (maybe).
The K-5 has only two rivals which however, can't beat it (except maybe for very fast action and long lenses): the very similiar Nikon D7000 and the bulkier and more expensive Canon 7D. If you now consider that only Pentax managed to pack a good sensor-shift stabilizer into the body which is the most elegant, sturdy, lightest and smallest of the three and is done by the smallest company of the three, then the K-5 is an engineering gem and a photographer's pleasure. No wonder it is the only SLR to receive this year's Photokina Star 2010.