If you'll allow me to bore you with a little story...
When I was a young lad and I moved to Bristol, me and my mate after a few too many beers would sometimes end up in Harvey's restaurant. Back in the 80's it was the place to be, and as part of what was then Allied Domecq - who owned some of the top French chateaux - it had a phenomenal wine list. The wines were bought by the restaurant donkeys years earlier and held in the cellars for the benefit of the diners, who got to have amazing wines at a fraction of the cost of what the same wine would cost from a wine merchant.
This being the case, I've been fortunate to drink a boat load of Chateaux Latour 1955 and Chateaux Lafite 1955. We used to pay £52 a bottle for it, which when you consider '55 is one of the best vintages of the last century, probably surpassed only by the '82, '61 and the '45, £52 a bottle was just stupidly cheap. A 30 year old Latour today retails I guess for something like £500 to £1,000 a bottle depending on vintage.
Needless to say, 35 years on, these are the finest wines I've ever tasted and unless I win the lottery, am destined to never enjoy again.
However, I will forever remember one occasion when I collared the sommelier passing my table and asked if I could have some english mustard to go with my beef wellington. The look on his face as he said "with the WINE sir????" obviously thinking what a fucking pleb, and then gathering himself saying, "er yes, yes of course, right away". He was none too amused when later in the evening he asked if we'd like anything else and I said, yes we'll have another bottle of the Latour please. I am laughing whilst typing this since it was so bloody ridiculous. Me and my pal had had 5 or 6 pints in the pub before we went there and to then sink 2 bottles of 1955 Latour was in hindsight a bit OTT. Happy days.
Back to planet earth, depends on your budget doesn't it. Barolo is great stuff, but really only comes into its own at £30/bottle or more, which is too steep for me these days. For £10 "The Wanted Zin" from Morrisons is great stuff. 100% Primitivo (aka Zinfandel) it's got massive blackberry fruit, rich and powerful and a touch of oak and leathery spice. Marvellous stuff.