Craig,
Trust your instincts. Recently developed drilling and permeability enhancement techniques are expected to double or triple the oil and gas production that can ultimately be developed from established units. I see it happening in Yoakum, Gaines, Anderson and other areas on the shallower Central Basin Platform. In eastern Ector, you can expect to see deeper horizons to be tested that are under rapid development in Midland County today.
Let your personal preferences and lifestyle dictate whether to hold or sell but in doing so, find out what the fair market value of your future income may be. I can tell you that after looking at your county for others, the FMV can not be found looking backwards at what has been paid but forward at what the industry can do in the future.
Gary L Hutchinson