I had to vote for Merlot. A Gundlach Merlot was the red wine that got me into wine in the mid 90s. Holy cow was it good. Since then, though, finding a qualified Merlot has been a challenge. So, off the shelf I’d probably prefer Cab, but a good Merlot is special to me.
And to think, when I found it in a grocery store it was literally a blind purchase. I knew nothing. And holy crap was it good with a cigar!!! So my BFF and I drank many bottles and smoked cigars and his wife put up with us which was good. And then the grocery store stopped carrying it and I was LOST.
I gave up on wine for many many years until I found this website that @WineDavid49 was running and then i was exposed to awesome wine again and the rest is history!
PS: I proposed to my wife and celebrated the next day at GunBun with a wine cave tasting. Special place in my heart, that place is.