Fairly open-ended question but assuming you're looking to stay with the high end kits, in the WE Eclipse line the Stag's Leap Merlot would be an excellent kit to consider.
Depending on your location (i.e. availability), in the RJ Spagnols line you might look at the Cellar Classic Winery Series Italian Super Tuscan which is excellent although probably a little more full bodied than the WE OVZ. If you like blends with zin, the Winery Series Winemaker's Red Trio.
In the Cellar Craft Showcase line consider the Walla Walla Cabernet Merlot or their OVZ is very good as well.
Of course, these are all going to required significantly more aging time than the DB or IM kits.