Sigma or Tamron 28-300mm for Canon 400D

[SIB]

Just bought myself this camera and am looking for a lense that "covers everything" for when i don't want to be carrying umpteen around with me !!

I've seen both these lenses at under the £200 mark and their specs seem very similar. Is one better than the other or are they pretty much the same?

 

[robmiller]

I'd rather have an 18-200 as a walkabout lens—I don't think I'd miss the 200-300 range, but I'd probably miss the 18-28 range.

 

[mrgubby]

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