Honestly, I haven't read through the entire thread cause I'm drinking and my attention span is low, but, at the moment we're using sebago (I think previously we were using burbank, then exton, depending on what we could get). Whack 'em through a chipper at roughly 1cm into a large saute pan (I think about 20lts, guessing on that one though) chuck in a decent amount of rosemary and 2 bulbs of garlic, split, fill to just cover chips and bring to the boil. Drain, cool for a few hours in cool room, then fry at 150oc for roughly 5mins; I tend to do this to touch/sight/smell as it changes a bit on the type and how long the the potatoes have been in the drystore for. Drain of oil, transfer into container and stick in coolroom. For service, cook at 180oc for about 2mins (or until crispy), drain, season w/ rosemary salt and send.
I reckon it results in a pretty tasty product, but then I'm not really a connoisseur of fries so can't compare them to much apart from the cook from frozen stuff from a bag.
Ta,
Josh