Where will you be selling them? I'm only able to visit the town easily but will happily visit either establishment there to partake. Also understand this is a personal choice, I have no idea what other cider fetishists drink! Main ones for me that I know can be had in bottles but can never find would be:
Black Dragon (Gwynt y Ddraig)
Gold Medal (Gwynt y Ddraig)
Old Rascal (Thatchers) - Already at the Moat House? My staple drink at the Greyhound as its low enough alcohol to have multiple!
Vintage Perry (Westons)
Of these I can't get the Welsh ones anywhere, the only places I know are the Wetherspoons in Llandudno and the Tesco at Abergele! Old Rascal I only know of at the Greyhound or the Moat House, and the vintage perry is sold in Tesco. More usual to find, but still a damn sight better than the usual offerings:
Green Goblin (Thatchers)
Wyld Wood (Westons)
Katy (Thatchers) - Already for sale in the Swan
Most Henry Westons range (vintage/sweet/dry)
Of these Green Goblin seems to have disappeared again after a brief popularity at the Pie & Ale House, Wyld Wood can be found in a few but not many (The Yard! That shocked me) and is a distinctive taste that not all may enjoy. Katy is a bit more popular, but a rather strong one for drinking out if you ask me. I believe that the Henry Westons are only really available at the Picture House, but would love to be proved wrong. I also had them last year in a tiny pub in the living room of an old farm looking building near a canal!
I'd also try virtually anything I'd not tried before, as long as it appeared to be a real cider and not a fake one. I've only been lucky enough to find a cider from Once Upon a Tree at the Swan at Whiston previously (Tumpy Ground), but that was a 20l box so not much use without a constant trade. Ross on Wye do some very interesting looking bottles although I am yet to try one, I've heard the Headless Man and the one with the alpaca on the front (cyder?) are rather good. I suspect these would be hard to come by though as I've never seen one. I'm thinking of making a few orders at Christmas from as many small companies as I can, give myself a bit of variety!