Maybe wrong here , but I think at least some of the buying that has going on in Temecula is being driven by L.A./O.C. Individuals looking for retirement/investment homes,
At least that is the case in at least two sales that I know of personally , They plan to retire in five or so years, keeping the Temecula home as a second home (or rental) until then, when they retire they plan on selling or renting their much smaller and much older L.A. and O.C. homes and move to T.V. .
Better than Vegas or phoenix or somewhere in the mid west seems to be the rallying call .