Hello photographer.. i have been wandering which fisheye/wide lens suit for Nikon D5000?? (best suitable for landscape photographers)

"Tokina 10-17mm f3.5-4.5 AT-X 107 DX Fisheye"
VS
"Samyang 8mm f/3.5 Aspherical IF MC Fish-eye"
VS
"Tokina AF 12-24mm f/4 AT-X Pro DX II"
VS
"Tokina 11-16mm f/2.8 AT-X"
VS
"Nikon 14-24mm f/2.8"
VS
"Sigma 12 - 24 mm F4.5-5.6 EX DG HSM"
VS
"Sigma AF 8-16mm f/4.5-5.6 DC HSM"

i plannin to get a lens soon.. thanks you sifu here.. XD