I want to buy DSLR lens that is compatible with NIKON D3100?

Which one is good between these three:

>>> Tamron AF 18-200mm Di II XR LD f/3.8-6.3

Model No: A14
Lens Construction: 13/15 (Groups/Element)
Angle of View: 75°33'-7°59'
Type of Zooming: Rotation
Minimum Focus Distance: 17.7in.(0.45m)
Diaphragm Blade Number: 7
Filter Diameter: 62mm
Accessory Supplied: Flower-Shaped Lens Hood

>>> Tamron AF 18-250mm Di II XR LD f/3.8-6.3

Model No: A18
Lens Construction: 13/16 (Groups/Element)
Angle of View: 75°33'-6°23'
Type of Zooming: Rotation
Minimum Focus Distance: 17.7in.(0.45m)
Diaphragm Blade Number: 7
Filter Diameter: 62mm
Accessory Supplied: Flower-Shaped Lens Hood

>>> Sigma 18-200mm f3.5-6.3 DC OS HSM

Minimum Aperture: F22
Minimum focusing Dis. : 45cm
Angle of View: 69.3 - 7.1 degree (Sigma SD Format)
Lens Construction: 18 Elements in 13 Groups
Filter Diameter: 72
Diaphragm Blades: 7 blades

Or basically, which one is good, Tamron or Sigma?

I would suggest you buying Nikon 18-200mm f/3.5-5.6G AF-S ED VR II Telephoto Zoom Lens Going with a Nikon lens is a better option