I like the Solero Exotic but Sainsbury's did an own brand which was very similar and was nice. Haven't had one in ages though.
I think the last time I had a cornetto type ice cream it was Icelands own brand, which wasn't bad if I remember correctly.
At the moment if I have ice cream I buy the big tubs of Asda really creamy. Their lemon meringue pie flavour is gorgeous and I like their toffee one too.
I used to like cider lollies too and a favourite from an ice cream van is lemon ice.