H4RDY
A review on the Sigma 18-125
http://www.photozone.de/8Reviews/len...3556/index.htm
What would concern me is the AF problem. I would test the lens before buying. The distortion and Vignetting are to be expected with a zoom of this range and price. Unless you really want a one lens solution for travelling, zooms of this type are best avoided. Too many design compromises.
The main advantage of the 400D kits lens it that it is a cheap wide angle lens(£50). For Postcard size prints the quaility is OK but does not stand up to any critical pixel peeping. If you were to resell it your be lucky to get £30 for it. So not bad for a stop gap lens until you can afford something better.
If you have the funds I would be inclined to go for something more expensive in the sigma EX range with a smaller zoom range.
see if you can find any reviews on the 24-70 F2.8 EX DG Marco for example.
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Rob
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