[Closed] Advice on 80mm or 100mm Forks to rebuild my old Kona Kula?

2001 Kona Kula in bright BT yellow... sitting in the corner staring at me.... wheels and other bits dangling in my shed (well council utility cupboard in the entrance hall of my block, but that's a Londoner's shed!)... a day out on Leith Hill on my Turner 5 Spot.... I really need something simple and light to mess around on and re-learn some basic skills. So: good quality used 80mm SIDs or Bombers from back in the day... or new 80mm like these? http://www.chainreactioncycles.com/Models.aspx?ModelID=57822 Or: 100mm which creates a lot more options, as 80mm seems pretty hard to find now. I read one thread which seems to suggest that current Kona XC bikes have the same geometry as my older one and they all run 100mm? Is this true? They just whacked 20mm extra on and didn't tweak anything? Anyway thoughts experiences much appreciated.