Carmel and Fishers both have been named by numerous sites as the best place to raise families so anywhere in those areas should be good choices. I write a blog at http://www.mycarmelblog.com
that could give you some insight into the neighborhoods, schools, parks, etc.
The great thing about the 111th area (i.e. Lexington Farms) is the Monon Center with it's lazy river, racquet and tennis facilities, indoor/outdoor pools, kiddie pool, etc. I'm not sure where you are coming from but I do a lot of relocation work and most people relocating here love the ease of traveling around the city.
If you'd like a relocation manual (I wrote one and update it each year), just email me at firstname.lastname@example.org and I'll send one to you.