In the space of a few years Malbec appears to have become the dominant red wine on sale in supermarkets (especially Waitrose, I've noticed). I really liked it when it first appeared about 20-25 years ago - I found it flavourful but a little fresher and easier drinking than some Cabernet Sauvignons or Chiantis. But the last bottle I bought for myself - probably at least a decade ago - was different and disappointing. TBH it reminded me of cough medicine - rather sweeter and more scented than it used to be. I was given a bottle for my birthday a few weeks ago and I accepted graciously but it tasted much the same as I remember. I did finish it though but I also felt vindicated in not having bought Malbec for so long! However, I could well be in the minority in not being a fan, judging by the umpteen brands available. Perhaps there is more than one style.
I do like Primitivo/Zinfandel and Carmenere and many dry white wines.