[polarmagnus]

I'm looking to get a wide angle lens. I've been looking at reviews and have come up with these two lenses.

Sigma 10-20mm f/4-5.6 EX DC HSM
Sigma 8-16mm f/4.5-5.6 EX DC HSM (hood fixed!)

I think the top Sigma might be a better option because you can't attach any filter to the other because of the fixed hood.
What does everyone else think?

Also what are the Pro's and Con's of a wide angle lens?

I use my 18-55mm kit lens (on the Canon 450D) all the time when shooting landscapes but I think its about time I looked for a better lens and upgraded. I also use this lens for macro.