I've lived in the newer communities on the Southwest side of Tucson for one year now and I think there are a lot of misconceptions about it.
In the one year I have been there - its been nothing but pleasant. Out here you are no closer to crime problems than you would be anywhere else in the city. You are actually probably further from it, being about 10 miles away from civilization and out in the county.
I'd hardly say its a "slum". Yes there are older - some would say "failed" developments from the 70s - but you'll find that anywhere in Tucson (for example - Corona and look how well properties are doing there now). Star Valley and Eagle point estates are very nice neighborhoods -- Also the area around Ajo and Kinney is just beautiful! Star Valley has a beautiful park with a dog park and walking trails. Plans are to expand it almost all the way to Casino Del Sol.
Schools anywhere is Arizona terrify me. However, with the fast development out here, new schools are not far off. A new elementary school is in plan for Star Valley. If Vail is any indication, the new schools should exceed present Arizona norm.
As far as ordering pizza and having it delivered - I haven't found one yet

Hopefully we will get more conviences as it is developing rapidly.
One thing is for sure. It is beautiful and quiet. I love living out of the city with the beautiful mountain views, awesome sunsets and starry nights. Also, being out in the county, the home prices are more reasonable.