Much of the best wine in the world is French, but much of the worst is as well. Their wine trade in this Country hit a bit of the doldrums 20 - 25 years ago when they wouldn't accept that the rest of the world was catching up and in many instances overtaking.
I worked briefly with a very well qualified and experienced French sommelier, though his knowledge ended at the Frech border. A group of us used to have a small wine tasting after work sometimes and I gave him a small glass of a NZ dessert white (Selaks, now Nobilo) and asked him what he thought it was - he thought it was one of two Premier Cru Sauternes. I showed him the (half) bottle and he asked if he could have the label to take home - no one at home would believe him when he told them how he'd been fooled. In a blind tasting of top class wines years ago two NZ reds were in the top ten, the cost of the French entries - £3000, the NZ ones £300.
The German wine trade went down the pan in this Country exactly as I prophesied in the '70s and early '80s - they sold so much rubbish to nascent wine drinkers they now struggle to sell us good stuff.
I tend to stick (not always) to Argentine and Chilean, my wife usually NZ. Tesco have reductions on some and 25% off six atm - if you like sauv. blanc, Te Pa works out at £6.75 down from £10.50. Errazuriz Max Carmenere is £7.50 down from £13 - treat yourself, both are excellent. (No, I don't work for Tesco.)