Where to live in and around Calgary

OK Me and the Missus will be packing up and heading back to Calgary. We used to live in the South West (Richmond Hill / Signal Hill area) about 2.5 years ago. Where are the good places to live now: Here are some criteria:

looking for a house not a condo
$160 -230 000 range
1200 sq ft or larger
has to be dog friendly

Will consider Okotoks. does anyone have an opinion on Langdon ?

Thanks a bunch