If you're leaning towards a big bold red I'm curious what other people suggest as well. As far as picking varietal based on the region, I've always just assumed the select grapes that are offered by my supplier (from Cali & some Italy) are all equally legit quality.
Cab Sauv seems like an easy choice just like Sangiovese. Merlot can be hit or miss with me. But what about the many other big reds you could do? I'm curious because there's a lot of big reds offered that I've haven't even tasted before let alone make. Here's a list of what is typically offered.
AJ, I know you are asking about a single variety, but a few years back I blended and co-fermented three Italian juices into my version of a "super Tuscan" which was 50% Cabernet Sauvignon, 25% Merlot and 25% Sangiovese. I thought it turned out very well.