Is Pan 14-45 sharper than 14-42 or PZ 14-42?

There are so many conflicting reviews. Can someone who used all three or at least two let me know how sharp they are compared to 14-42 kit? I have a 14-42 and thinking about getting either 14-45 or PZ if there will a noticeable improvement.

One advantage of 14-42 PZ is it can be converted to a 11mm with Panny adapter.

SLRgear.com for 14-42 PZ:

The Panasonic 14-42mm X is remarkably sharp, and a noticeable improvement over the existing 14-42mm kit lens.

The original G1 kit lens, the 14-45mm actually tested a bit better than the version that replaced it (the 14-42mm above), but it's not as good as the 14-42mm X.

Agaist 14-42 PZ:

Ephotozine: Optically no better than kit lens

wlcastleman.com:  The X PZ 14-42mm lens has very good performance in the 14 to 20mm range. Photographic performance (i.e., sharpness and freedom from vignetting) is significantly compromised at 42mm. The significanly larger Panasonic 14-45mm f/3.5-5.6 lens showed significanly better performance in these tests.