Hello all, While I mostly use the 18-70 zoom with my D300 for walkaround photos of landscapes and the occasional city trip, I would frequently prefer a lighter and more compact package with less zoom barrel dangling around. I already have the 35/2, but it isn't wide enough on DX format for this purpose (and I mostly shoot at the wide end). So I started to research the 20/2.8 and the 24/2.8 (AF-D versions). However, the lens characteristics of both of these primes do not look good in the lab tests by photozone.de as compared to the 18-70 - of the two, the 24/2.8 seems to fare a bit better and also is cheaper than the 20/2.8 on eBay, but I'm reluctant to spend any significant money on a prime lens with less IQ than my existing 18-70, regardless of the convenience factor. Of course, MTF charts & Co. are one thing, and using the lens in practice is another. So I wonder if anyone familiar with one of the aforementioned primes and the 18-70 zoom could share some observations about the relative performance of these lenses in the real world.