I recently tried the cream sherry from both Aldi and Lidl, and the port from Lidl.
They're both better than their cheap fortified wines, which taste artificial and dodgy to me. But Aldi's sherry tastes sweet like sugar whereas Lidl's tastes sweet like honey. I prefer the Lidl one.
They're both £5.25, with the Lidl one being 17% and Aldi's 18%.
Aldi's sherry tastes like their normal fortified wine but better, without that cheap artificial overtone. Lidl's tastes very similar to Emva Cream but the flavour is weaker or watered down. It doesn't quite have that sharp nice taste Emva Cream used to. Still worth buying though. The honey-like sweetness means if I buy another one for Christmas it'll be Lidl's.
Lidl's port, at £6.29 and 19% is also very nice, with no cheap artificial overtones. It tastes like a normal red wine, just very sweet without being sickly.
Purely in the interests of research, I shall try the port from Aldi next, though I suspect it'll probably just taste like a posh version of their fortified wine, like their cream sherry does. I hate all those cheap fortified wines. Their taste evokes the mental imagery of teenagers swigging it from the bottle down the park whilst acting like arses.
Lidl's port or sherry would be a great drink after a dinner that ended in trifle or custard and cake.