Durham Fox
El Dude Brother.
It depends on which regions you like, I can't stand French or Italian Red, much preferring South African, Australian and Chilean.
My personal faves are any Wolfblass, any Penfolds and the Fish or Storm Hoek. I also don't much mind the Tesco Isla Negro (started and finished a bottle in the last hour).
All available for under a 10-spot a bottle. There used to be one called 4 Emus that was divine, but can't find it for love nor money now.
They're all the same grape. I'd challenge you to tell the difference between a French and Chilean grown Cabernet for instance.