My words to Jenise on Montecillo in the other thread were:
"Montecillo is a big Bodega, along with M d Caceres and Faustino they are the most common Rioja I see. Currently, their wines are fair, but their older Gran Reserva (esp. Vina Monty) are very good. "
For low $20s the Gran Reserva is a nice wine, but it probably only needs 5 years to show best. I'm not sure when they switched to new French oak and 100% Tempranillo... Manuel might know if he is lurking. They did do a good deal of renovating in 1998. I actually buy their Cumbrero when I am in Maine and my options are limited. Again, old Vina Monty rules.