HEB is an interesting acronym. It is the name of a popular Texas chain of grocery stores (of which there are none in the HEB area) or also to refer to the area located centrally between Dallas and Fort Worth in the cities of H
uless, & B
edford. It's a pretty decent place to live and work, schools
are decent. You will have great access to big city life if you want to (within easy driving of Dallas and Fort Worth) and yet with suburban advantages. Very close to DFW airport but generally not so close as to be disturbed by noise.
More details on the schools. School districts (called ISDs) do not always follow city limits. HEB ISD is generally ok, check the schools in your proposed neighborhood for more specifics. In general, I have heard better things about Grapevine/Colleyville schools (some homes in Euless fall in this district) and also Keller schools (slightly NW of HEB area). But to clarify, most of the schools in these areas are generally fine, nothing like Dallas or Fort Worth schools.
Once more, I have to say I know little about the Houston area except when I've visited it always sets off my allergies. Also though all of Texas gets horribly hot all summer (which starts in a couple of weeks I think and lasts until Halloween) Houston adds in some tremendous humidity to boot.