OP I just moved to Plainview in August from the West Texas area. I love it! It is almost in the middle of Amarillo and Lubbock. (45 miles from Lubbock and 60 from Amarillo) Its a bit larger than Canyon, but not right next to a large city. I work in Agriculture and its a good Ag area (even though the market is not doing well). There are a lot of good people here. I have lived in small towns all my life (excluding my time in College Station) and Plainview is by far the town I have enjoyed the most. I recommend at least checking it out if you are considering the area.
CanyonAg- I am not trying to knock Canyon in anyway. I like Canyon, I am up there a lot for work and it is beautiful. I just figured I would give OP my two cents.
JWC c/o 2009