With my job I drive all around the Denver area and have lived a few diffrent places.
Golden is a quick commute to Downtown, Arvada, Lakewood, Westminster and even south end of town such as Littleton, Highlands Ranch, Tech center can be resonable if you take 93 to 470. We rented there for a year and it was a nice place but housing is kind of strage in that town.
We are currently living in Lakewood (Morrison rd by bear lake) and so far we like it. My wife works in Arvada and I drive all over Denver but most days I start my day at the office 1-25 and Lincoln (by sky ridge) Downtown Denver and Arvada are about a 20 min commute and my commute to the south is about 30 mins.
You may look along 6th ave from Wadsworth west, quick commute and prices can be decent. East of Wadsworth starts to get a little rougher but with the new light rail going in that might change but not sure yet.
Applewood is another place to look, the houses are older but most have garages. Nice area and you are right off I-70
Highlands might be another place to check out, it is a cool / hip area with nice old brick houses just a few miles from downtown Denver. My wife loves the area and has been bugging me to buy a house in that area. Rent might be above your price range and garages are going to be harder to find but it might be worth looking at.
Downtown Denver was kind of a cool place to live, always something to do and you can walk to just about anything you want. Downside is the lack of garage but you could always rent one a little ways away.
Westminster is cheap compared to other areas but the commute sucks
Not a fan of Aurora :ack: