For quite a number of years we would spend time in the Weslaco area before heading into Mexico. We would walk across the bridge at Progresso and get all the paper work done there and then we were free to chose where we crossed and what day or time. Over the years we have crossed at all the border crossing it seems some better then others. If you are in that area the crossing at Anazuldas just west of Reynosa is a nice crossing and gets you onto the highyway to Monterray with no problem and you dont have to traverse Reynosa to get to it.
It would be great if Chris would chime in on this as he knows the area well.