Cabernet & Merlot: France, Chile, Australia.

Updated February 2018
I've added a few more Cab-Mer, Mer-Cab (Sauvignon/Franc) or straight Cab Sauvs that are worth the typing and fit the theme; the first one in particular is very well-priced:
Château Tanunda 2016 'Basket Press' Barossa Cabernet-Merlot (15% abv) - This sumptuous blockbuster red, one of Sainsbury's 'Taste the Difference' label range, is made by one of South Australia's most famous and elderly wine estates (as opposed to Monty Python's similar-sounding Chateau Chunder which was destined for 'laying down and avoiding...'), and is packed with cassis, ripe damson and liquorice flavours but is multi-layered and 'meaty' too. Lots of taste for £10. 

Shiraz: Australia (and France)

According to Wine Australia, their country boasts around 40,000 hectares of Shiraz - Syrah under vine which means 25% of overall plantings. And here's another fascinating titbit for you: apparently rotundone, a chemical compound found in black pepper among other things is the same one found in Shiraz giving the wines that renowned spicy peppery character, but about 20% of people aren't able to detect and taste it. So now you know. Over to the wines then: discover five very different and worthwhile Shirazes below coming from South Australia, Victoria and Canberra. And a bonus one from the south of France (much better value too)...

Pinot Noir: Australia, California, France, Hungary

Vineyard in Tasmania by Wine Australia

California

Scott Peterson ROX Pinot Noir 2015 Sonoma Coast - Silky smooth Pinot with plenty of aromatic 'sweet and savoury' fruit, touches of vanilla oak but not overdone, nice supple tannins and 'lightness' despite its big 14.5% abv weight. £19.99/£14.99 Naked Wines $29.99/$17.99... 

Chardonnay: France, Australia, South Africa

Continuing the varietal 'wines of the moment' theme (last time it was Riesling), Chardonnay is having a minor resurrection or holding its own at least - once so fashionable then eclipsed by Sauvignon Blanc and Pinot Grigio - which is a good thing as it's much more versatile style-wise than either of those two grape varieties (peachy, citrus, tropical, oaky, oatmeal, buttery, mineral, something for everyone...). According to Wine Australia: "Chardonnay is Australia's number one selling variety in the UK off-premise market," although admittedly "the best growth" is for "other whites," such as PG and SB... Here are three pairs of recommended Chardys from three countries in different styles and stores...

Riesling: Australia, Chile, Germany, California

Gary Mills
jamsheed.com.au

It's been a while since this blog subjected viewers to an unbridled Riesling-fest - those who are that way included might like to click here for lots of Riesling-tinged links. So here's my pick of five £10+ bottles that effortlessly exude the variety's class and charm while all being subtly different, which were made in various regions of Australia, Chile, Germany and California respectively...