wide lens

here's my wide angle lens wishlist, i've should have one of them if i didn't lose my money-shit!

Tokina 11-16mm f/2.8 (USD830)
Sigma 10-20/4-5.6 HSM (USD500)
Sigma AF 8-16mm f/4.5-5.6 DC HSM (USD 810)

Canon 10-22mm f 4.5-4.5 EF-S USM (USD 880)

coz my wallet is pretty much naked, i'm buying sigma 10-22mm at the moment. i'm not intending to grab the same lens of f3.5 version coz it coz about USD120 more and i'm shooting landscape and not action. A max apeture of f4 is enough i think. the review wasn't bad, there group of this lens on flickr is quite huge and great photo of these lens are shown which is very attractive. i'll give a try.