Posted: 13/10/2013 at 07:08
Bob, there's no link between leaf type and flavour beyond Potato Leaves being likely to be heirlooms, hence likely to have more flavour than, say, a Regular Leaf hybrid. The PL shape is a recessive gene, it will disappear if crossed with a RL variety.
There was a school of thought around the heirloom tom traps that PL varieties were, for some reason, more resistant to fungal problems but I've never noticed it.
PM me your details and I'll send you a couple of nice varieties.