More times than not, I've been disappointed with current vintages of sub $25 Napa cabs and now pretty much avoid that category. They do seem to improve a bit with age, but I don't have the extra cellar space to allocate to them. If you are looking for a Caymus substitute at the $25 price range you will probably be disappointed too. I second the votes for Chappellet Signature and Mondavi Oakville, but they probably won't be a pop-n-pour performers like Caymus. In a good year you could also add Round Pond Estate, but all these are around $40-$45 per bottle. Maybe try something from Washington (Novelty Hill and Seven Hills come to mind). Good luck.