• Heavy, but lighter than 2 lenses – 5 stars
• Great Lens – 5 stars
• It’s okay – 3 stars
• small package–big performer – 5 stars
• Nice Easy To Use Lense….. – 3 stars
• Love this lens! – 5 stars
• Great lens great buy greAT price – 5 stars
• I’m Lovin’ it! – 4 stars
• I Love This Lens – 5 stars
• Frustration Ended – 5 stars
• Nice all around lens – 4 stars
• Simply Amazing! – 5 stars
• Great lens! Reasonable cost – 5 stars
• Solid, Quality Lens – 4 stars
• Very Good–for the price – 4 stars
• The Lens I Will Wear Out! – 5 stars
• Excellent Value All Around Performer – 5 stars
• Versatility and Vibration Compensation – 5 stars
• Good value for the money – 4 stars
• LOVE This Lens SO WORTH THE MONEY!!!!! – 5 stars

Not one negative (I didn’t go past the first page on this quick check) – you can check for yourself at B & H Photo.
More about the Sigma 18-250 on my Squdioo lens.