The Panasonic Lumix G Vario 14-140mm F3.5-5.6 ASPH. Power OIS ($699.99) features an ambitious 10x zoom range, but doesn't suffer from the extreme distortion issues that often plague similar designs. It is compatible with Micro Four Thirds cameras , and offers integrated optical stabilization.
Optically stabilized; 10x zoom range; Very little distortion; Good center sharpness through range; Quiet, snappy focus motor
Some edge and telephoto sharpness issues; Pricey