Annoying Pedant Alert!!!
It's Monterey, with one r. Monterrey, with two, would be down in Mexico---and not a place in Mexico that makes wine.
Having been personally involved for several years with Jekel Vineyards, I'm happy you like the current wines. Over the years Jekel has produced some pretty good Riesling from Monterey. The best thing that happened there was in the 1990s, when the Winemaker and the Brand Manager (*ahem*) colluded to begin a sugar depletion program over a span of the next few years to change the style from one of over 3.5% rs to one of less than 1% rs.
Sales responded very positively, and the Riesling vineyard was saved from being replanted to....yep, Chardonnay...and Jekel even had to purchase significant amounts of Riesling from other locations. Mind you, the numbers weren't huge by the standards of the uber-bulk producers, but the balancing out of sugar/fruit/acid generated a quadrupling of sales at the time, and firmly re-established Jekel as a Riesling winery instead of just another rote producer of usual suspects.