DeSoto County is interesting because it has million dollar McMansions for the Memphis white flight. But it has poor blank towns like Hornlake. I went to a mall in DeSoto County. Quite a cultural clash lol.
Ehh...DeSoto is not really known as a "nice" Memphis suburb. On Zillow, there are currently only 3 houses for sale in DeSoto County going for $1M+ and they each have considerable acreage (7ac, 30ac and 42ac.) Germantown and Collierville currently have 61 such homes listed for sale between them, with about ~10 pushing the $2M price tag.
The dynamics of DeSoto suburbia are strange because, unlike Tennessee, Mississippi has a state income tax. I suspect the highest-earning Memphians would prefer to stay in TN, for this reason.